title: Angular binding for loading doesn't update the HTML
body: <p>I am trying to show a loading indicator whenever a user clicks the save button. When the button is clicked, the state changes successfully, but reverting back the value of the <code>loading</code> property on scope to the false state doesn't update the UI. </p>
  
  <p>Is it something i'm doing wrong with scope properties, or is this a flaw with angular?</p>
  
  <p>Here's my jsBin: <a href="http://jsbin.com/xafexorope/2/edit?html,output" rel="nofollow">http://jsbin.com/xafexorope/2/edit?html,output</a></p>