Fixed git status message after commit because there's a remote

_episodes/04-changes.md

@@ -156,6 +156,8 @@ $ git status
 
 ~~~
 On branch master
+Your branch is ahead of 'origin/master' by 1 commit.
+  (use "git push" to publish your local commits)
 nothing to commit, working directory clean
 ~~~
 {: .output}