add diff info to readme
add diff info to readme

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