title: git push heroku master permission denied
body: <p>I am following the ruby.railstutorial. I run the command "git push heroku master" and it spits out this error.</p>
  
  <pre><code>Permission denied (publickey).
  fatal: Could not read from remote repository.
  Please make sure you have the correct access rights
  and the repository exists.
  </code></pre>
  
  <p>I am inside my rails app "/Users/lexi87/rails_projects/first_app". Any solutions?</p>