title: What is the best way to go about upgrading a rails app to support Facebook SSL?
body: <p>With the upcoming SSL migration at Facebook on 1 October, all apps will have to support connections over HTTPS and for that you'll need an SSL certificate.</p>
  
  <ul>
  <li>Is there a run-down anywhere of how a person should patch an app?</li>
  <li>Will you have to use Apache and Passenger, xginx or other server?</li>
  <li>Are there any free trusted certificates?</li>
  </ul>