add compilation howto
add compilation howto

ffff-next/ffff-next,meskal/ffff-next,ffff-next/ffff-next,ffff-next/ffff-next,meskal/ffff-next,ffff-next/ffff-next,meskal/ffff-next,RedDog99/bielefeld,RedDog99/bielefeld,RedDog99/bielefeld