// Option 1 - For portrait orientation only
override func viewDidLoad() {
  super.viewDidLoad()
  tableView.rowHeight = UITableViewAutomaticDimension
  tableView.estimatedRowHeight = 160.0
}

// Option 2 - For both portrait and landscape orientations
override func viewDidLoad() {
  super.viewDidLoad()
  tableView.rowHeight = UITableViewAutomaticDimension
}

func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
  if isLandscapeOrientation() {
    return hasImageAtIndexPath(indexPath) ? 140.0 : 120.0
  } else {
    return hasImageAtIndexPath(indexPath) ? 235.0 : 155.0
  }
}