Added .FanUp animateStyle

[levous]

Awesome work on this control!

I added the ability to fan the liquid buttons up and out from the origin. I slightly refactored a couple of functions to simplify but I tried not to make unnecessary changes.

I'd considered restructuring the project to be more generic and less CocoaPod coupled but thought better of it. If you'd like me to do that, I'm happy to reorganize and rename in a more conventional but it's not very important. Just shoot me a note and I'll create another Pull Request around a restructure.