Adding a source link to README.md

README.md

@@ -2,6 +2,7 @@ This adds git mirror functionality to gitlab.  The whole purpose of this project
 
 * [Git Mirror](http://stackoverflow.com/questions/2756747/mirror-a-git-repository-by-pulling)
 * [Git Push all Branches](http://stackoverflow.com/questions/1914579/set-up-git-to-pull-and-push-all-branches)
+* [Git update Mirror](https://github.com/ndechesne/git-mirror/blob/master/git-mirror)
 
 # Prereqs