Create an example directory and add some code examples. (#944)

* update example directory

* modify some compile error.

* update with clang-format

* update

* update

* add_definitions("../include/json")

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Date:      Wed Jul 10 21:26:16 2019 +0800
#
# On branch code_example
# Your branch is up-to-date with 'origin/code_example'.
#
# Changes to be committed:
#	modified:   example/CMakeLists.txt
#

* change CMakeLists.txt

* update streamWrite.cpp

* update

* Update readFromStream.cpp

* fix typo

src/test_lib_json/jsontest.cpp

@@ -378,8 +378,8 @@ void Runner::preventDialogOnCrash() {
   _CrtSetReportHook(&msvcrtSilentReportHook);
 #endif // if defined(_MSC_VER)
 
-  // @todo investigate this handler (for buffer overflow)
-  // _set_security_error_handler
+// @todo investigate this handler (for buffer overflow)
+// _set_security_error_handler
 
 #if defined(_WIN32)
   // Prevents the system from popping a dialog for debugging if the

src/test_lib_json/main.cpp

@@ -2615,7 +2615,7 @@ JSONTEST_FIXTURE(IteratorTest, const) {
   Json::Value const v;
   JSONTEST_ASSERT_THROWS(
       Json::Value::iterator it(v.begin()) // Compile, but throw.
-  );
+      );
 
   Json::Value value;