加了一个小功能

[LawrenceHan]

Added disableBindedScrollView feature.

Since the demo didn't use the correct version, so here I've updated it, and I also added a feature. The reason I added the feature is because I think the page control animation is soooo cool, and should not only serve a scrollView. In my app, I use it as a rating bar.

[LawrenceHan]

@KittenYang