class DemoTableViewController: UITableViewController {

  var refreshView: BreakOutToRefreshView!
  
  // ...
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    refreshView = BreakOutToRefreshView(scrollView: tableView)
    refreshView.refreshDelegate = self
  
    // configure the refresh view
    refreshView.scenebackgroundColor = .white
    refreshView.textColor = .black
    refreshView.paddleColor = .brown
    refreshView.ballColor = .darkGray
    refreshView.blockColors = [.blue, .green, .red]
  
    tableView.addSubview(refreshView)
  }  
}

extension DemoTableViewController: UIScrollViewDelegate {
 
  override func scrollViewDidScroll(scrollView: UIScrollView) {
    refreshView.scrollViewDidScroll(scrollView)
  }
  
  override func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
    refreshView.scrollViewWillEndDragging(scrollView, withVelocity: velocity, targetContentOffset: targetContentOffset)
  }
  
  override func scrollViewWillBeginDragging(scrollView: UIScrollView) {
    refreshView.scrollViewWillBeginDragging(scrollView)
  }
}

extension DemoTableViewController: BreakOutToRefreshDelegate {
  
  func refreshViewDidRefresh(refreshView: BreakOutToRefreshView) {
    // load stuff from the internet
  }

}

override func viewWillAppear(_ animated: Bool) {
  super.viewWillAppear(animated)
  
  refreshView = BreakOutToRefreshView(scrollView: tableView)
  refreshView.refreshDelegate = self
  
  // configure the refresh view
  refreshView.scenebackgroundColor = .white
  refreshView.textColor = .black
  refreshView.paddleColor = .brown
  refreshView.ballColor = .darkGray
  refreshView.blockColors = [.blue, .green, .red]
  
  tableView.addSubview(refreshView)
}

override func viewWillDisappear(_ animated: Bool) {
  super.viewWillDisappear(animated)
  
  refreshView.removeFromSuperview()
  refreshView = nil
}