title: express-session is not saving user's session data
body: <p><code>express-session</code> is refusing to save the session data for my users.</p>
  
  <p>It <em>is</em> saving the session cookie, but the data is not persisting.</p>
  
  <p>Here is my <a href="http://pastebin.com/d32zCwwT" rel="nofollow">server.js</a>.</p>