override func viewDidLoad(){
super.viewDidLoad()
let singleTapRecognizer = UITapGestureRecognizer
(target: self, action: "handleSingleTap:")
view.addGestureRecognizer(singleTapRecognizer)
}
@IBAction func popToMasterView(){
self.navigationController?.popToRootViewControllerAnimated(true)
}