New Formula: brainfuck

Things to be fixed:
 - The man page gets installed as `brainfuck_darwin` instead of `brainfuck`. I have no idea how to fix this, any ideas? (I've tried searching for info on `man1.install` but didn't really find anything)

Also, the formula is currently head only. I don't really know what to here since they don't tag releases or for that matter seems to have releases at all. Should I try to talk to them or should I specify a specific commit as stable?