title: How to use Django-autocomplete-light for foreign key in the admin
body: <p>I've been struggling to add an autocomplete to django admin fk fields, I've come across this third party app, Django-autocomplete-light, but its docs are very confusing for beginner like me.</p>
  
  <p>So, I have my model, and how could I add an autocomplete for the fk fields.</p>
  
  <pre><code>Class Order(models.Models)
     Client = models.ForeignKey(settings.AUTH_USER_MODEL)
  </code></pre>