title: UITableViewCell delete button without editing mode (like mail app)
body: <p>Not sure if this functionality is built into <code>UITableViewCell</code>, but I'd like to mimic the behavior of the mail app. I have a <code>UITableView</code> with dynamic cells. When the user performs a left swipe gesture, a delete button (I believe the button text in the mail app says archive instead of delete) should appear on the right-hand side of the cell. </p>
  
  <p>I'm confortable with what to do after that to delete the row. I just need to make the button appear and disapper should the user swipe right OR tap anywhere else in the <code>UITableView</code>.</p>
  
  <p>I would prefer to do this without adding an 'Edit' <code>UINavigationItem</code> button and putting the tableView in edit mode as per the "Table View Programming Guide", but appreciate the use of any built in methods. </p>
  
  <p>Thanks.</p>