maroslaw/rainyday.js — pull request #88 by tak0303 (2013-11-08 13:07:14+00:00)
Title: Move request animation frame to other method

In `animateDrops` method is defines `raf`, that a polyfill of `requestAnimationFrame` every frame of method execution.

I think it is not good for performance.

So, I moved this to other method and defines `requestAnimationFrame` in constructor.