title: Align button image to right edge of UIButton
body: <p>There are plenty of threads about aligning a button image according to the title text, but I can't find anything about just aligning the image to the right side of the button.</p>
  
  <p>This has no effect:</p>
  
  <pre><code>button.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 50);
  </code></pre>
  
  <p>How can one right-align the image for a button? Can it be done in the Storyboard?</p>