title: How to use django-activity-stream to Create Notificications
body: <p>I would like to use django-activity-stream in order to present notifications to users, but I am having a hard time doing so. From the looks of the documentation, you can only display generic actions to users, such as <strong>all</strong> that actions performed on a model, but I would like to filter them. For example: If <code>User A</code> posts a <code>Comment</code> on <code>User B</code>'s <code>Article</code>, I want to be able to show that notification to <code>User B</code>. </p>
  
  <p>I have tried <a href="https://stackoverflow.com/questions/34708719/django-activity-stream-filter-actions-by-foreignkey-in-target-model">this</a> approach, but the approved solution is not working at all (although my question is basically the same).</p>
  
  <p>Any suggestions?</p>
  
  <p><code>Django v1.9.6</code>
  <code>Python v3.4.3</code>
  <code>django-activity-stream v0.6.2</code></p>