override func viewDidLoad() {
    super.viewDidLoad()

   _ = NSTimer.scheduledTimerWithTimeInterval(2.1,target: self,selector: #selector(Splash.someSelector),userInfo: nil,repeats: false)
    // Do any additional setup after loading the view.
}

func someSelector() {
    let storyboard : UIStoryboard = UIStoryboard(name: "Main",bundle: nil)
    let vc : TabBarCotroller = storyboard.instantiateViewControllerWithIdentifier("TabBarCotroller") as! TabBarCotroller

    let navigationController = UINavigationController(rootViewController: vc)
    self.presentViewController(navigationController,animated: true,completion: nil)
}