extension UIView {

func appearFromBelow(parent: UIView, below: Bool = true) {

    let wrapper = UIView(frame: frame)
    wrapper.clipsToBounds = true
    wrapper.addSubview(self)
    wrapper.backgroundColor = UIColor.blueColor()
    frame = wrapper.bounds
    parent.addSubview(wrapper)

}

func animateIn(duration: Double) {
    UIView.animateWithDuration(duration) {
        self.transform = CGAffineTransformIdentity
    }
}

}