More docs and some cleanups for Rugged::Repository.
More docs and some cleanups for Rugged::Repository.

Acidburn0zzz/rugged,libgit2/rugged,tpickett66/rugged,saraid/rugged,libgit2/rugged,Acidburn0zzz/rugged,Acidburn0zzz/rugged,saraid/rugged,saraid/rugged,libgit2/rugged,tpickett66/rugged,tpickett66/rugged