Adding simple example

SUMMARY.md

@@ -11,6 +11,7 @@
     * [Communicating with your code](chapters/basics/comms.md)
     * [How to Structure Your Project](chapters/basics/structure.md)
     * [Running Other Programs](chapters/basics/programs.md)
+    * [A Simple Example](chapters/basics/example.md)
 * [Adding Features](chapters/features.md)
     * [C++11 and Beyond](chapters/features/cpp11.md)
     * [Small but common needs](chapters/features/small.md)

chapters/basics/example.md

@@ -0,0 +1,8 @@
+# A simple example
+
+This is a simple yet complete example of a proper CMakeLists. For this program, we have one library (MyLibExample) with a header file and a source file,
+and one application, MyExample,  with one source file. 
+
+2[import:'main', lang:'cmake'](../../examples/simple-project/CMakeLists.txt)
+
+The complete example is available in examples folder in the Modern CMake git repository.

examples/simple-project/CMakeLists.txt

@@ -1,3 +1,5 @@
+## [main]
+
 # Almost all CMake files should start with this
 # You should always specify a range with the newest
 # and oldest tested versions of CMake. This will ensure
@@ -30,7 +32,10 @@ add_executable(MyExample simple_example.cpp)
 # even flags, so linking a target that does not exist will not give a configure-time error.
 target_link_libraries(MyExample PRIVATE MyLibExample)
 
+## [main]
+
 # This part is so the Modern CMake book can verify this example builds. For your code,
 # you'll probably want tests too
 enable_testing()
 add_test(NAME MyExample COMMAND MyExample)
+