title: How to stop a UIScrollView at a specific point?
body: <p>How do you stop a <code>UIScrollView</code> at specific point? That is, set the final position of the <code>UIScrollView</code> after user interaction? </p>
  
  <p>Specifically, how can you set intervals along a horizontal <code>UIScrollView</code>, so that the it will only stop at these points? </p>
  
  <p>I hope what I have said is clear enough. </p>