add git-ignore
add git-ignore

Signed-off-by: Jan Losinski <ac68c006427fd23159c5a4c6fb6cdd4332319f6f@secunet.de>

agdsn/pycroft,agdsn/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,lukasjuhrich/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,agdsn/pycroft,lukasjuhrich/pycroft