title: Could not open a connection to your authentication agent
body: <p>I am running into this error of: </p>
  
  <pre class="lang-none prettyprint-override"><code>$ git push heroku master
  Warning: Permanently added the RSA host key for IP address '50.19.85.132' to the list of known hosts.
  !  Your key with fingerprint b7:fd:15:25:02:8e:5f:06:4f:1c:af:f3:f0:c3:c2:65 is not authorized to access bitstarter.
  </code></pre>
  
  <p>I tried to add the keys and I get this error below:</p>
  
  <pre class="lang-none prettyprint-override"><code>$ ssh-add ~/.ssh/id_rsa.pub
  Could not open a connection to your authentication agent.
  </code></pre>