functional Group ID matching on Osx
functional Group ID matching on Osx

The --no-headers option does not exists in Osx world (and most likely
BSD in general). There does not seem to be a sane way to remove headers
cross platform, so defaulting to grep out PGID.

facebook/taste-tester,jaymzh/taste-tester,facebook/taste-tester,jaymzh/taste-tester,odcinek/taste-tester,odcinek/taste-tester