title: How to get the first_name via graph api?
body: <p>I can get the picture with this code:</p>
  
  <pre><code>https://graph.facebook.com/userid/picture
  </code></pre>
  
  <p>but this doesn't work:</p>
  
  <pre><code>https://graph.facebook.com/userid/first_name
  </code></pre>
  
  <p>How can I get user's name ?</p>