title: use ng-bind-html with URL
body: <p>Currently I have a div with <code>ng-bind-html</code> that I use to bind to HTML that I pass in </p>
  
  <pre><code>&lt;div ng-bind-html="renderHtml(message.text)" /&gt;
  </code></pre>
  
  <p>Currently <code>message.text</code> is HTML. I would rather like to pass in a URL and have that HTML inserted in to the <code>div</code>.</p>
  
  <p>How can I achieve that?</p>