diff --git a/README.md b/README.md
index 14328f0..ee9c50f 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,8 @@ cmake_minimum_required(VERSION 3.16)
 include(FetchContent)
 
 ...
-
+set(JSON_VALIDATOR_BUILD_EXAMPLES OFF)
+set(JSON_VALIDATOR_BUILD_TESTS OFF)
 FetchContent_Declare(json_schema_validator 
 GIT_REPOSITORY https://github.com/pboettch/json-schema-validator.git 
 GIT_TAG v2.1.2)
@@ -94,6 +95,8 @@ target_link_libraries(my-target PUBLIC nlohmann_json_schema_validator)
 
 That's it.
 
+See complete project example in the `example` folder.
+
 ## Building
 
 This library is based on Niels Lohmann's JSON-library and thus has
@@ -112,13 +115,13 @@ Do not run cmake inside the source-dir. Rather create a dedicated build-dir:
 git clone https://github.com/pboettch/json-schema-validator.git
 cd json-schema-validator
 # configure
-cmake -B build .
+cmake -B build
 
 # build
-cmake --build build .
+cmake --build build
 
 # install if needed
-cmake --build build --target install .
+cmake --build build --target install
 
 # run unit, non-regression and test-suite tests
 cd build
diff --git a/cmake/HunterGate.cmake b/cmake/HunterGate.cmake
deleted file mode 100644
index 6d9cc24..0000000
--- a/cmake/HunterGate.cmake
+++ /dev/null
@@ -1,539 +0,0 @@
-# Copyright (c) 2013-2019, Ruslan Baratov
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
-#
-# * Redistributions of source code must retain the above copyright notice, this
-#   list of conditions and the following disclaimer.
-#
-# * Redistributions in binary form must reproduce the above copyright notice,
-#   this list of conditions and the following disclaimer in the documentation
-#   and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# This is a gate file to Hunter package manager.
-# Include this file using `include` command and add package you need, example:
-#
-#     cmake_minimum_required(VERSION 3.2)
-#
-#     include("cmake/HunterGate.cmake")
-#     HunterGate(
-#         URL "https://github.com/path/to/hunter/archive.tar.gz"
-#         SHA1 "798501e983f14b28b10cda16afa4de69eee1da1d"
-#     )
-#
-#     project(MyProject)
-#
-#     hunter_add_package(Foo)
-#     hunter_add_package(Boo COMPONENTS Bar Baz)
-#
-# Projects:
-#     * https://github.com/hunter-packages/gate/
-#     * https://github.com/ruslo/hunter
-
-option(HUNTER_ENABLED "Enable Hunter package manager support" ON)
-
-if(HUNTER_ENABLED)
-  if(CMAKE_VERSION VERSION_LESS "3.2")
-    message(
-        FATAL_ERROR
-        "At least CMake version 3.2 required for Hunter dependency management."
-        " Update CMake or set HUNTER_ENABLED to OFF."
-    )
-  endif()
-endif()
-
-include(CMakeParseArguments) # cmake_parse_arguments
-
-option(HUNTER_STATUS_PRINT "Print working status" ON)
-option(HUNTER_STATUS_DEBUG "Print a lot info" OFF)
-option(HUNTER_TLS_VERIFY "Enable/disable TLS certificate checking on downloads" ON)
-
-set(HUNTER_ERROR_PAGE "https://docs.hunter.sh/en/latest/reference/errors")
-
-function(hunter_gate_status_print)
-  if(HUNTER_STATUS_PRINT OR HUNTER_STATUS_DEBUG)
-    foreach(print_message ${ARGV})
-      message(STATUS "[hunter] ${print_message}")
-    endforeach()
-  endif()
-endfunction()
-
-function(hunter_gate_status_debug)
-  if(HUNTER_STATUS_DEBUG)
-    foreach(print_message ${ARGV})
-      string(TIMESTAMP timestamp)
-      message(STATUS "[hunter *** DEBUG *** ${timestamp}] ${print_message}")
-    endforeach()
-  endif()
-endfunction()
-
-function(hunter_gate_error_page error_page)
-  message("------------------------------ ERROR ------------------------------")
-  message("    ${HUNTER_ERROR_PAGE}/${error_page}.html")
-  message("-------------------------------------------------------------------")
-  message("")
-  message(FATAL_ERROR "")
-endfunction()
-
-function(hunter_gate_internal_error)
-  message("")
-  foreach(print_message ${ARGV})
-    message("[hunter ** INTERNAL **] ${print_message}")
-  endforeach()
-  message("[hunter ** INTERNAL **] [Directory:${CMAKE_CURRENT_LIST_DIR}]")
-  message("")
-  hunter_gate_error_page("error.internal")
-endfunction()
-
-function(hunter_gate_fatal_error)
-  cmake_parse_arguments(hunter "" "ERROR_PAGE" "" "${ARGV}")
-  if("${hunter_ERROR_PAGE}" STREQUAL "")
-    hunter_gate_internal_error("Expected ERROR_PAGE")
-  endif()
-  message("")
-  foreach(x ${hunter_UNPARSED_ARGUMENTS})
-    message("[hunter ** FATAL ERROR **] ${x}")
-  endforeach()
-  message("[hunter ** FATAL ERROR **] [Directory:${CMAKE_CURRENT_LIST_DIR}]")
-  message("")
-  hunter_gate_error_page("${hunter_ERROR_PAGE}")
-endfunction()
-
-function(hunter_gate_user_error)
-  hunter_gate_fatal_error(${ARGV} ERROR_PAGE "error.incorrect.input.data")
-endfunction()
-
-function(hunter_gate_self root version sha1 result)
-  string(COMPARE EQUAL "${root}" "" is_bad)
-  if(is_bad)
-    hunter_gate_internal_error("root is empty")
-  endif()
-
-  string(COMPARE EQUAL "${version}" "" is_bad)
-  if(is_bad)
-    hunter_gate_internal_error("version is empty")
-  endif()
-
-  string(COMPARE EQUAL "${sha1}" "" is_bad)
-  if(is_bad)
-    hunter_gate_internal_error("sha1 is empty")
-  endif()
-
-  string(SUBSTRING "${sha1}" 0 7 archive_id)
-
-  if(EXISTS "${root}/cmake/Hunter")
-    set(hunter_self "${root}")
-  else()
-    set(
-        hunter_self
-        "${root}/_Base/Download/Hunter/${version}/${archive_id}/Unpacked"
-    )
-  endif()
-
-  set("${result}" "${hunter_self}" PARENT_SCOPE)
-endfunction()
-
-# Set HUNTER_GATE_ROOT cmake variable to suitable value.
-function(hunter_gate_detect_root)
-  # Check CMake variable
-  string(COMPARE NOTEQUAL "${HUNTER_ROOT}" "" not_empty)
-  if(not_empty)
-    set(HUNTER_GATE_ROOT "${HUNTER_ROOT}" PARENT_SCOPE)
-    hunter_gate_status_debug("HUNTER_ROOT detected by cmake variable")
-    return()
-  endif()
-
-  # Check environment variable
-  string(COMPARE NOTEQUAL "$ENV{HUNTER_ROOT}" "" not_empty)
-  if(not_empty)
-    set(HUNTER_GATE_ROOT "$ENV{HUNTER_ROOT}" PARENT_SCOPE)
-    hunter_gate_status_debug("HUNTER_ROOT detected by environment variable")
-    return()
-  endif()
-
-  # Check HOME environment variable
-  string(COMPARE NOTEQUAL "$ENV{HOME}" "" result)
-  if(result)
-    set(HUNTER_GATE_ROOT "$ENV{HOME}/.hunter" PARENT_SCOPE)
-    hunter_gate_status_debug("HUNTER_ROOT set using HOME environment variable")
-    return()
-  endif()
-
-  # Check SYSTEMDRIVE and USERPROFILE environment variable (windows only)
-  if(WIN32)
-    string(COMPARE NOTEQUAL "$ENV{SYSTEMDRIVE}" "" result)
-    if(result)
-      set(HUNTER_GATE_ROOT "$ENV{SYSTEMDRIVE}/.hunter" PARENT_SCOPE)
-      hunter_gate_status_debug(
-          "HUNTER_ROOT set using SYSTEMDRIVE environment variable"
-      )
-      return()
-    endif()
-
-    string(COMPARE NOTEQUAL "$ENV{USERPROFILE}" "" result)
-    if(result)
-      set(HUNTER_GATE_ROOT "$ENV{USERPROFILE}/.hunter" PARENT_SCOPE)
-      hunter_gate_status_debug(
-          "HUNTER_ROOT set using USERPROFILE environment variable"
-      )
-      return()
-    endif()
-  endif()
-
-  hunter_gate_fatal_error(
-      "Can't detect HUNTER_ROOT"
-      ERROR_PAGE "error.detect.hunter.root"
-  )
-endfunction()
-
-function(hunter_gate_download dir)
-  string(
-      COMPARE
-      NOTEQUAL
-      "$ENV{HUNTER_DISABLE_AUTOINSTALL}"
-      ""
-      disable_autoinstall
-  )
-  if(disable_autoinstall AND NOT HUNTER_RUN_INSTALL)
-    hunter_gate_fatal_error(
-        "Hunter not found in '${dir}'"
-        "Set HUNTER_RUN_INSTALL=ON to auto-install it from '${HUNTER_GATE_URL}'"
-        "Settings:"
-        "  HUNTER_ROOT: ${HUNTER_GATE_ROOT}"
-        "  HUNTER_SHA1: ${HUNTER_GATE_SHA1}"
-        ERROR_PAGE "error.run.install"
-    )
-  endif()
-  string(COMPARE EQUAL "${dir}" "" is_bad)
-  if(is_bad)
-    hunter_gate_internal_error("Empty 'dir' argument")
-  endif()
-
-  string(COMPARE EQUAL "${HUNTER_GATE_SHA1}" "" is_bad)
-  if(is_bad)
-    hunter_gate_internal_error("HUNTER_GATE_SHA1 empty")
-  endif()
-
-  string(COMPARE EQUAL "${HUNTER_GATE_URL}" "" is_bad)
-  if(is_bad)
-    hunter_gate_internal_error("HUNTER_GATE_URL empty")
-  endif()
-
-  set(done_location "${dir}/DONE")
-  set(sha1_location "${dir}/SHA1")
-
-  set(build_dir "${dir}/Build")
-  set(cmakelists "${dir}/CMakeLists.txt")
-
-  hunter_gate_status_debug("Locking directory: ${dir}")
-  file(LOCK "${dir}" DIRECTORY GUARD FUNCTION)
-  hunter_gate_status_debug("Lock done")
-
-  if(EXISTS "${done_location}")
-    # while waiting for lock other instance can do all the job
-    hunter_gate_status_debug("File '${done_location}' found, skip install")
-    return()
-  endif()
-
-  file(REMOVE_RECURSE "${build_dir}")
-  file(REMOVE_RECURSE "${cmakelists}")
-
-  file(MAKE_DIRECTORY "${build_dir}") # check directory permissions
-
-  # Disabling languages speeds up a little bit, reduces noise in the output
-  # and avoids path too long windows error
-  file(
-      WRITE
-      "${cmakelists}"
-      "cmake_minimum_required(VERSION 3.2)\n"
-      "project(HunterDownload LANGUAGES NONE)\n"
-      "include(ExternalProject)\n"
-      "ExternalProject_Add(\n"
-      "    Hunter\n"
-      "    URL\n"
-      "    \"${HUNTER_GATE_URL}\"\n"
-      "    URL_HASH\n"
-      "    SHA1=${HUNTER_GATE_SHA1}\n"
-      "    DOWNLOAD_DIR\n"
-      "    \"${dir}\"\n"
-      "    TLS_VERIFY\n"
-      "    ${HUNTER_TLS_VERIFY}\n"
-      "    SOURCE_DIR\n"
-      "    \"${dir}/Unpacked\"\n"
-      "    CONFIGURE_COMMAND\n"
-      "    \"\"\n"
-      "    BUILD_COMMAND\n"
-      "    \"\"\n"
-      "    INSTALL_COMMAND\n"
-      "    \"\"\n"
-      ")\n"
-  )
-
-  if(HUNTER_STATUS_DEBUG)
-    set(logging_params "")
-  else()
-    set(logging_params OUTPUT_QUIET)
-  endif()
-
-  hunter_gate_status_debug("Run generate")
-
-  # Need to add toolchain file too.
-  # Otherwise on Visual Studio + MDD this will fail with error:
-  # "Could not find an appropriate version of the Windows 10 SDK installed on this machine"
-  if(EXISTS "${CMAKE_TOOLCHAIN_FILE}")
-    get_filename_component(absolute_CMAKE_TOOLCHAIN_FILE "${CMAKE_TOOLCHAIN_FILE}" ABSOLUTE)
-    set(toolchain_arg "-DCMAKE_TOOLCHAIN_FILE=${absolute_CMAKE_TOOLCHAIN_FILE}")
-  else()
-    # 'toolchain_arg' can't be empty
-    set(toolchain_arg "-DCMAKE_TOOLCHAIN_FILE=")
-  endif()
-
-  string(COMPARE EQUAL "${CMAKE_MAKE_PROGRAM}" "" no_make)
-  if(no_make)
-    set(make_arg "")
-  else()
-    # Test case: remove Ninja from PATH but set it via CMAKE_MAKE_PROGRAM
-    set(make_arg "-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}")
-  endif()
-
-  execute_process(
-      COMMAND
-      "${CMAKE_COMMAND}"
-      "-H${dir}"
-      "-B${build_dir}"
-      "-G${CMAKE_GENERATOR}"
-      "${toolchain_arg}"
-      ${make_arg}
-      WORKING_DIRECTORY "${dir}"
-      RESULT_VARIABLE download_result
-      ${logging_params}
-  )
-
-  if(NOT download_result EQUAL 0)
-    hunter_gate_internal_error(
-        "Configure project failed."
-        "To reproduce the error run: ${CMAKE_COMMAND} -H${dir} -B${build_dir} -G${CMAKE_GENERATOR} ${toolchain_arg} ${make_arg}"
-        "In directory ${dir}"
-    )
-  endif()
-
-  hunter_gate_status_print(
-      "Initializing Hunter workspace (${HUNTER_GATE_SHA1})"
-      "  ${HUNTER_GATE_URL}"
-      "  -> ${dir}"
-  )
-  execute_process(
-      COMMAND "${CMAKE_COMMAND}" --build "${build_dir}"
-      WORKING_DIRECTORY "${dir}"
-      RESULT_VARIABLE download_result
-      ${logging_params}
-  )
-
-  if(NOT download_result EQUAL 0)
-    hunter_gate_internal_error("Build project failed")
-  endif()
-
-  file(REMOVE_RECURSE "${build_dir}")
-  file(REMOVE_RECURSE "${cmakelists}")
-
-  file(WRITE "${sha1_location}" "${HUNTER_GATE_SHA1}")
-  file(WRITE "${done_location}" "DONE")
-
-  hunter_gate_status_debug("Finished")
-endfunction()
-
-# Must be a macro so master file 'cmake/Hunter' can
-# apply all variables easily just by 'include' command
-# (otherwise PARENT_SCOPE magic needed)
-macro(HunterGate)
-  if(HUNTER_GATE_DONE)
-    # variable HUNTER_GATE_DONE set explicitly for external project
-    # (see `hunter_download`)
-    set_property(GLOBAL PROPERTY HUNTER_GATE_DONE YES)
-  endif()
-
-  # First HunterGate command will init Hunter, others will be ignored
-  get_property(_hunter_gate_done GLOBAL PROPERTY HUNTER_GATE_DONE SET)
-
-  if(NOT HUNTER_ENABLED)
-    # Empty function to avoid error "unknown function"
-    function(hunter_add_package)
-    endfunction()
-
-    set(
-        _hunter_gate_disabled_mode_dir
-        "${CMAKE_CURRENT_LIST_DIR}/cmake/Hunter/disabled-mode"
-    )
-    if(EXISTS "${_hunter_gate_disabled_mode_dir}")
-      hunter_gate_status_debug(
-          "Adding \"disabled-mode\" modules: ${_hunter_gate_disabled_mode_dir}"
-      )
-      list(APPEND CMAKE_PREFIX_PATH "${_hunter_gate_disabled_mode_dir}")
-    endif()
-  elseif(_hunter_gate_done)
-    hunter_gate_status_debug("Secondary HunterGate (use old settings)")
-    hunter_gate_self(
-        "${HUNTER_CACHED_ROOT}"
-        "${HUNTER_VERSION}"
-        "${HUNTER_SHA1}"
-        _hunter_self
-    )
-    include("${_hunter_self}/cmake/Hunter")
-  else()
-    set(HUNTER_GATE_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}")
-
-    string(COMPARE NOTEQUAL "${PROJECT_NAME}" "" _have_project_name)
-    if(_have_project_name)
-      hunter_gate_fatal_error(
-          "Please set HunterGate *before* 'project' command. "
-          "Detected project: ${PROJECT_NAME}"
-          ERROR_PAGE "error.huntergate.before.project"
-      )
-    endif()
-
-    cmake_parse_arguments(
-        HUNTER_GATE "LOCAL" "URL;SHA1;GLOBAL;FILEPATH" "" ${ARGV}
-    )
-
-    string(COMPARE EQUAL "${HUNTER_GATE_SHA1}" "" _empty_sha1)
-    string(COMPARE EQUAL "${HUNTER_GATE_URL}" "" _empty_url)
-    string(
-        COMPARE
-        NOTEQUAL
-        "${HUNTER_GATE_UNPARSED_ARGUMENTS}"
-        ""
-        _have_unparsed
-    )
-    string(COMPARE NOTEQUAL "${HUNTER_GATE_GLOBAL}" "" _have_global)
-    string(COMPARE NOTEQUAL "${HUNTER_GATE_FILEPATH}" "" _have_filepath)
-
-    if(_have_unparsed)
-      hunter_gate_user_error(
-          "HunterGate unparsed arguments: ${HUNTER_GATE_UNPARSED_ARGUMENTS}"
-      )
-    endif()
-    if(_empty_sha1)
-      hunter_gate_user_error("SHA1 suboption of HunterGate is mandatory")
-    endif()
-    if(_empty_url)
-      hunter_gate_user_error("URL suboption of HunterGate is mandatory")
-    endif()
-    if(_have_global)
-      if(HUNTER_GATE_LOCAL)
-        hunter_gate_user_error("Unexpected LOCAL (already has GLOBAL)")
-      endif()
-      if(_have_filepath)
-        hunter_gate_user_error("Unexpected FILEPATH (already has GLOBAL)")
-      endif()
-    endif()
-    if(HUNTER_GATE_LOCAL)
-      if(_have_global)
-        hunter_gate_user_error("Unexpected GLOBAL (already has LOCAL)")
-      endif()
-      if(_have_filepath)
-        hunter_gate_user_error("Unexpected FILEPATH (already has LOCAL)")
-      endif()
-    endif()
-    if(_have_filepath)
-      if(_have_global)
-        hunter_gate_user_error("Unexpected GLOBAL (already has FILEPATH)")
-      endif()
-      if(HUNTER_GATE_LOCAL)
-        hunter_gate_user_error("Unexpected LOCAL (already has FILEPATH)")
-      endif()
-    endif()
-
-    hunter_gate_detect_root() # set HUNTER_GATE_ROOT
-
-    # Beautify path, fix probable problems with windows path slashes
-    get_filename_component(
-        HUNTER_GATE_ROOT "${HUNTER_GATE_ROOT}" ABSOLUTE
-    )
-    hunter_gate_status_debug("HUNTER_ROOT: ${HUNTER_GATE_ROOT}")
-    if(NOT HUNTER_ALLOW_SPACES_IN_PATH)
-      string(FIND "${HUNTER_GATE_ROOT}" " " _contain_spaces)
-      if(NOT _contain_spaces EQUAL -1)
-        hunter_gate_fatal_error(
-            "HUNTER_ROOT (${HUNTER_GATE_ROOT}) contains spaces."
-            "Set HUNTER_ALLOW_SPACES_IN_PATH=ON to skip this error"
-            "(Use at your own risk!)"
-            ERROR_PAGE "error.spaces.in.hunter.root"
-        )
-      endif()
-    endif()
-
-    string(
-        REGEX
-        MATCH
-        "[0-9]+\\.[0-9]+\\.[0-9]+[-_a-z0-9]*"
-        HUNTER_GATE_VERSION
-        "${HUNTER_GATE_URL}"
-    )
-    string(COMPARE EQUAL "${HUNTER_GATE_VERSION}" "" _is_empty)
-    if(_is_empty)
-      set(HUNTER_GATE_VERSION "unknown")
-    endif()
-
-    hunter_gate_self(
-        "${HUNTER_GATE_ROOT}"
-        "${HUNTER_GATE_VERSION}"
-        "${HUNTER_GATE_SHA1}"
-        _hunter_self
-    )
-
-    set(_master_location "${_hunter_self}/cmake/Hunter")
-    if(EXISTS "${HUNTER_GATE_ROOT}/cmake/Hunter")
-      # Hunter downloaded manually (e.g. by 'git clone')
-      set(_unused "xxxxxxxxxx")
-      set(HUNTER_GATE_SHA1 "${_unused}")
-      set(HUNTER_GATE_VERSION "${_unused}")
-    else()
-      get_filename_component(_archive_id_location "${_hunter_self}/.." ABSOLUTE)
-      set(_done_location "${_archive_id_location}/DONE")
-      set(_sha1_location "${_archive_id_location}/SHA1")
-
-      # Check Hunter already downloaded by HunterGate
-      if(NOT EXISTS "${_done_location}")
-        hunter_gate_download("${_archive_id_location}")
-      endif()
-
-      if(NOT EXISTS "${_done_location}")
-        hunter_gate_internal_error("hunter_gate_download failed")
-      endif()
-
-      if(NOT EXISTS "${_sha1_location}")
-        hunter_gate_internal_error("${_sha1_location} not found")
-      endif()
-      file(READ "${_sha1_location}" _sha1_value)
-      string(COMPARE EQUAL "${_sha1_value}" "${HUNTER_GATE_SHA1}" _is_equal)
-      if(NOT _is_equal)
-        hunter_gate_internal_error(
-            "Short SHA1 collision:"
-            "  ${_sha1_value} (from ${_sha1_location})"
-            "  ${HUNTER_GATE_SHA1} (HunterGate)"
-        )
-      endif()
-      if(NOT EXISTS "${_master_location}")
-        hunter_gate_user_error(
-            "Master file not found:"
-            "  ${_master_location}"
-            "try to update Hunter/HunterGate"
-        )
-      endif()
-    endif()
-    include("${_master_location}")
-    set_property(GLOBAL PROPERTY HUNTER_GATE_DONE YES)
-  endif()
-endmacro()
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index 0aa0af6..69c88f0 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -3,9 +3,12 @@ include(FetchContent)
 
 project(stand-alone VERSION 1.0.0 LANGUAGES CXX)
 
+set(JSON_VALIDATOR_BUILD_EXAMPLES OFF)
+set(JSON_VALIDATOR_BUILD_TESTS OFF)
+
 FetchContent_Declare(json_schema_validator 
-GIT_REPOSITORY https://github.com/pboettch/json-schema-validator.git 
-GIT_TAG v2.1.0)
+GIT_REPOSITORY https://github.com/vrince/json-schema-validator
+GIT_TAG 379cf8c2b4ad49fe3a21e926ffdf543b9e9da8df)
 FetchContent_MakeAvailable(json_schema_validator)
 
 add_executable(stand-alone stand-alone.cpp)
diff --git a/example/README.md b/example/README.md
index e69de29..8514503 100644
--- a/example/README.md
+++ b/example/README.md
@@ -0,0 +1,16 @@
+# Stand Alone Example
+
+This demonstrate how to use `json-schema-validator` in you own cmake project.
+
+## Build
+
+```bash
+cmake -B build .
+cmake --build build
+```
+
+## Run
+
+```
+./build/stand-alone <schema.json> <file.json>
+```
\ No newline at end of file
diff --git a/example/stand-alone.cpp b/example/stand-alone.cpp
index 40e6445..d989e4c 100644
--- a/example/stand-alone.cpp
+++ b/example/stand-alone.cpp
@@ -1,54 +1,57 @@
-#include <iostream>
+/*
+ * JSON schema validator for JSON for modern C++
+ * SPDX-License-Identifier: MIT
+ */
 
 #include <nlohmann/json-schema.hpp>
 
+#include <fstream>
+#include <iostream>
+
 using nlohmann::json;
+using nlohmann::json_schema::default_string_format_check;
 using nlohmann::json_schema::json_validator;
 
-// The schema is defined based upon a string literal
-static json uri_schema = R"(
+static int usage(const char *name)
 {
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "type": "object",
-  "properties": {
-    "myUri": {
-      "type":"string",
-      "format": "uri"
-    }
-  }
-})"_json;
-
-// The people are defined with brace initialization
-static json good_uri = {{"myUri", "http://hostname.com/"}};
-static json bad_uri = {{"myUri", "http:/hostname.com/"}};
-
-static void uri_format_checker(const std::string &format, const std::string &value)
-{
-	if (format == "uri") {
-		if (value.find("://") == std::string::npos)
-			throw std::invalid_argument("URI does not contain :// - invalid");
-	} else
-		throw std::logic_error("Don't know how to validate " + format);
+	std::cerr << "Usage: " << name << " <schema> <document>\n";
+	return EXIT_FAILURE;
 }
 
-int main()
+int main(int argc, char *argv[])
 {
-	json_validator validator(nullptr, uri_format_checker); // create validator
+	if (argc != 3)
+		return usage(argv[0]);
+
+	std::ifstream ifs;
+	ifs.exceptions(std::ifstream::failbit | std::ifstream::badbit);
 
 	try {
-		validator.set_root_schema(uri_schema); // insert root-schema
-	} catch (const std::exception &e) {
-		std::cerr << "Validation of schema failed, here is why: " << e.what() << "\n";
+		ifs.open(argv[1]);
+		json schema = json::parse(ifs);
+
+		json_validator validator(nullptr, default_string_format_check);
+		validator.set_root_schema(schema);
+
+		ifs.open(argv[2]);
+		json document = json::parse(ifs);
+
+		validator.validate(document);
+	}
+	catch(const std::ifstream::failure& e) {
+		std::cerr << "Exception opening/reading file" << std::endl;
+		return EXIT_FAILURE;
+	}
+	catch (const std::exception &e) {
+		std::cerr << e.what() << std::endl;
+		return EXIT_FAILURE;
+	}
+	catch (...)
+	{
+		std::cerr << "unknown error" << std::endl;
 		return EXIT_FAILURE;
 	}
 
-	validator.validate(good_uri);
-
-	try {
-		validator.validate(bad_uri);
-	} catch (const std::exception &e) {
-		std::cerr << "Validation expectedly failed, here is why: " << e.what() << "\n";
-	}
-
+	std::cout << "document is valid !" << std::endl;
 	return EXIT_SUCCESS;
 }