Fix CMake custom script (#658)

* CMake - CMake now detects custom scripts in the Custom directory

* CMake - CMake now detects the custom script headers

* CMake - Added an example in the README on how to make a CMakeLists.txt for a custom script

src/scripts/Custom/README.md

@@ -8,3 +8,19 @@ add scripts to project solution.
 
 BTW, **We strongly suggest you** to use our module system to create your custom 
 powerful module instead of simple scripts.
+
+
+
+
+-----------------
+CMakeLists.txt example:
+
+set(scripts_STAT_SRCS
+  ${scripts_STAT_SRCS}
+  ${AC_SCRIPTS_DIR}/Custom/your_script.cpp
+  ${AC_SCRIPTS_DIR}/Custom/your_script.h
+)
+
+AC_ADD_SCRIPT_LOADER("Custom" "ScriptLoader.h")
+
+message("  -> Prepared: My custom scripts")