title: Setting an Android Notification Icon to a remote URL
body: <p>I want to use a remote URL (like a favicon) for a notification icon, however the constructor for a notification accepts only a resource ID (which is an integer) instead of something more useful like a <code>FileInputStream</code>.</p>
  
  <p>How can I either</p>
  
  <ul>
  <li><p>define a new resource for a stream source</p></li>
  <li><p>download an icon, add to my resources, and then dynamically get an ID?</p></li>
  </ul>