Adding .DS_Store to the .gitignore
Adding .DS_Store to the .gitignore

Change-Id: I95d2664f4853bfa5d95544a4823bbf2e5887b87a
Signed-off-by: Colin Dixon <342564bc1ab1e55103f85104b5e013adfdf828cb@colindixon.com>

opendaylight/yangtools,522986491/yangtools,NovusTheory/yangtools,opendaylight/yangtools