title: Align image with top showing a portion of image in Swift 2 iOS 9
body: <p>I need to align a <code>UIImageView</code> in a way that only top portion of the image is shown. (Please see the screenshot image, <code>UIImageView</code> is marked with red outline). 
  Say the image has a width = 320px and height = 300px then I want to show full width:320px but for height only the top 100px should show up. </p>
  
  <p>Please guide me how can i achieve the same on iOS 9 / Swift 2.0.   </p>
  
  <p><a href="https://i.stack.imgur.com/R46Ro.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/R46Ro.jpg" alt="play"></a></p>