title: Pull down to refresh
body: <p>I would like to implement a "Pull down to refresh" into my application. Just like twitter has in their iPhone app. </p>
  
  <p><img src="https://i.stack.imgur.com/lZJFy.jpg" alt="enter image description here"></p>
  
  <p>I have found a good source code: <a href="https://github.com/enormego/EGOTableViewPullRefresh" rel="nofollow noreferrer">PullDownToRefresh</a> but people are saying that they have copyrighted it or somewhat? Please could anyone clarify? </p>
  
  <p>And also, does anyone know of any good tutorials for this pull down to refresh?</p>
  
  <p>Thanks.</p>