title: UICollectionView/UITableView starting position (Swift 3)
body: <p>What is the proper way of setting the start position? </p>
  
  <p>Like all chat applications they start at the bottom, but doing it myself it populates from the top and down, and the scrollToRowAtIndexPath or setting the contentOffset is just scrolling to the bottom, which I don't prefer as the chat grows.. </p>