title: Google App Engine unable to find dev_appserver.py
body: <p>I started using <a href="https://github.com/atom/find-and-replace/issues/189" rel="nofollow">Atom</a> editor and inadvertently renamed everything in my google app engine folder from "appengine" to "google.golang.org". I switched it all back even replacing the "go_appengine" folder but I'm still getting the following error when I run my app:</p>
  
  <pre><code>goapp serve: unable to find dev_appserver.py
  </code></pre>
  
  <p>Thoughts?</p>