title: Toggle edit button to done
body: <p>Been trying to get the button to change from "edit" to "done".  I am doing a tutorial and it seems to work on their end but not mine.  I can't seem to find the issue.</p>
  
  <p>The code:</p>
  
  <pre><code>- (IBAction)onEditButtonTapped:(UIBarButtonItem *)sender {
      [self.tableView setEditing:true animated:true];
      sender.style = UIBarButtonItemStyleDone;
      sender.title = @"Done";
  }
  </code></pre>