Merge pull request #50 from garryyao/fix/git-status

Fixed git status is broken on branch name containing forward-slash.

gitstatus.sh

@@ -67,7 +67,7 @@ else
   if [[ "$remote_name" == '.' ]]; then
     remote_ref="$merge_name"
   else
-    remote_ref="refs/remotes/$remote_name/${merge_name##*/}"
+    remote_ref="refs/remotes/$remote_name/${merge_name##refs/heads/}"
   fi
 
   # get the revision list, and count the leading "<" and ">"