title: Django: How do I use UUIDField from django-extensions
body: <p>How do I use the UUIDField in my model?</p>
  
  <p>If i do </p>
  
  <pre><code>somefield = UUIDField 
  </code></pre>
  
  <p>i get:</p>
  
  <pre><code> UUIDField is not defined.
  </code></pre>
  
  <p>I do import uuid on top of my models file.</p>
  
  <p>And i have django_extensions in installed apps... </p>