说明：  这是一个能让你轻松的用 VC 显示 GIF 动画的类。使用该类能让图片控件轻松的显示 GIF 动画，并能方便的在动画和静态图片中切换。
(This is an easy to use allows you to display GIF animation VC class. The use of such images can easily control the display of GIF animation, and can easily picture in the animation and static switch.)