requestAnimationFrame polyfill/implementation change

- Use the npm module "raf" (chrisdickinson) instead of the
  requestAnimationFrame polyfill from Velocity.js.  The raf polyfill has
a more robust implementation for browsers that don't have raf.
- Browsers with native raf will use that.
Updating dist files for publish Fri Nov  7 11:19:13 MST 2014
0.0.1-37