[How to build Module for Platform]
It is only for modules are needed to using Android build system. Please check its own install informaion under its folder for other module. 

1. Get original android open source.
    : version info - Android Kitkat 4.4.2
    ( Download site : http://source.android.com )

2. Copy module that you want to build - to original android open source

3. execute build command
   - source build/envsetup.sh
   - lunch full-eng
   - make -j4


