Add a CONTRIBUTING file
Add a CONTRIBUTING file

Signed-off-by: Mike Burke <a17fed27eaa842282862ff7c1b9c8395a26ac320@livioconnect.com>

jthrun/sdl_android,jthrun/sdl_android,anildahiya/sdl_android,mrapitis/sdl_android,914802951/sdl_android,smartdevicelink/sdl_android