title: how to set size and position of UIButton's image
body: <p>UIButton, how to set size and position of background image ?</p>
  
  <p>e.g how to change size and position the image to be on top of the <code>UIButton</code></p>
  
  <p>EDIT: issue fixed by using <code>setImageEdgeInsets:</code> e.g:</p>
  
  <pre><code>[button setTitleEdgeInsets:UIEdgeInsetsMake(0, -image.size.width, 0, 0)];
  [button setImageEdgeInsets:UIEdgeInsetsMake(0, button.titleLabel.bounds.size.width, 0, 0)];
  </code></pre>