Animation
override func viewDidAppear(animated: Bool) {
UIView.animateWithDuration(1.0, animations: { () -> Void in
self.image.center = CGPointMake(self.image.center.x + 400, self.image.center.y)
self.image.alpha = 1.0
self.image.frame = CGRectMake(0 , 0, 320, 320)
})
}