title: How to Implement Swipe Left to Right in UITableView Cell similar to iOS Mail
body: <p>I'm trying to replicate the same technique that Apple uses in their mail app for marking mail as unread or "Mark as Unread" when you swipe from left to right inside a mailbox.  </p>
  
  <p><img src="https://i.stack.imgur.com/l5sr4.jpg" alt="Screenshot of Mail inside iOS 8.1 Mail app"></p>
  
  <p>I've found <a href="https://gist.github.com/marksands/76558707f583dbb8f870" rel="noreferrer">similar</a> <a href="https://stackoverflow.com/questions/9060032/swipe-left-or-right-anywhere-in-a-uitableviewcell-to-delete-the-cell-with-no-del">solutions</a> but only for a gesture of swiping from right to left. I was hoping that this same solution was available as part of the Apple SDK for the opposite direction.</p>
  
  <p><strong>How can I acheive the same left-to-right gesture effect as iOS' Mail app does?</strong></p>