title: async loading img on angularjs app
body: <p>I'm looking for a simple and good way to load my photos on my Angularjs app.
  for exemple, I had, a img</p>
  
  <pre><code>&lt;img ng-src="{{myPathToImg}}"&gt;
  </code></pre>
  
  <p>and I want to display another img ( svg spinner ) like somes point who mooves
  during the image download.
  I think I have to use a directive, but I don't know how to load with async my img</p>