setup APEX

To set up APEX (1.2.4) using Windows:

1. Set APEX_ROOT to the Root-Directory of your unzipped APEX SDK (containing modules, framework,...)
2. Remake CMakeLists.txt and check if all directories were found properly.
3. Maybe it's necessary to include the DLLs path to your path environment variable once the engine actually does some work. The Path should be something like ${APEX_ROOT}\bin\vc10win64-PhysX_3.2 for x64-machines.