title: remote rejected master -> master (pre-receive hook declined)
body: <p>I'm working in rails 3.2 and I receive an error when I try to push to heroku:</p>
  
  <pre><code> git push heroku master
  Counting objects: 496, done.
  Delta compression using up to 8 threads.
  Compressing objects: 100% (435/435), done.
  Writing objects: 100% (496/496), 5.17 MiB | 249 KiB/s, done.
  Total 496 (delta 125), reused 216 (delta 8)
  
  -----&gt; Heroku receiving push
  -----&gt; Removing .DS_Store files
   !     Heroku push rejected, no Cedar-supported app detected
  
  To git@heroku.com:lumeo.git
   ! [remote rejected] master -&gt; master (pre-receive hook declined)
  error: failed to push some refs to 'git@heroku.com:lumeo.git'
  </code></pre>
  
  <p>I have tried the few methods recommended on this forum, including emptying and reinstalling the Gems and deleting and adding the remote, to no avail.</p>
  
  <p>any suggestions?</p>