Enable use of jsmn as a git submodule in other git projects using CMake.

CMakeLists.txt

@@ -0,0 +1,13 @@
+
+# This CMakeLists.txt file is used to import the jsmn library into your CMake based project.
+# Use the add_subdirectory command to include this directory in your build and include jsmn in your target_link_libraries command.
+# For example
+# add_subdirectory(jsmn build) will import the jsmn library into your projects CMake build system.
+# target_link_libraries(example jsmn) will link the jsmn library to your example target.
+# You can then use #include "jsmn.h" in your source files to include the jsmn library.
+
+add_library(jsmn INTERFACE)
+
+target_include_directories(jsmn INTERFACE
+  ${CMAKE_CURRENT_LIST_DIR}
+)

README.md

@@ -172,6 +172,35 @@ If you get `JSMN_ERROR_NOMEM`, you can re-allocate more tokens and call
 periodically call `jsmn_parse` and check if return value is `JSMN_ERROR_PART`.
 You will get this error until you reach the end of JSON data.
 
+
+Git Submodule in CMake Projects
+-------------------------------
+
+The jsmn library can be integrated into a CMake project as a git submodule 
+using the CMakeLists.txt file provided in the jsmn repository.
+
+Your project must first be initialized with git:
+
+	git init
+
+Then, add the jsmn library as a submodule of your project:
+
+	git submodule add https://github.com/zserge/jsmn.git
+
+Next, update the submodules:
+
+	git submodule update --init --recursive
+
+Finally, include the jsmn library in your CMakeLists.txt file with the 
+add_subdirectory and target_link_libraries commands:
+
+	add_subdirectory(jsmn build)
+	target_link_libraries(my_project jsmn)
+
+You can then use #include "jsmn.h" in your source files to include the
+jsmn library and begin using the jsmn library.
+
+
 Other info
 ----------