title: gpg: no valid OpenPGP data found
body: <p>I am trying to install Jenkins on Ubuntu 13.10 and I am getting the above mentioned error when i try to run the following command:</p>
  
  <pre><code>wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
  </code></pre>