swift add animated icon
func createImageArray(total: Int, imagePrefix: String) -> [UIImage] {
    var imageArray:[UIImage] = []
    for imageCount in 1..<total {
        let imageName = "(imagePrefix).(imageCount)"
        let image = UIImage(named: imageName)!
        imageArray.append(image)
    }
    return imageArray
}
func animate(imageView: UIImageView, images: [UIImage]) {
    imageView.animationImages = images
    imageView.animationDuration = 0.7
    imageView.animationRepeatCount = 1
    imageView.startAnimating()
}
