Fade Mode

Hi Guys

I love ur switch! But ... it was missing something I needed which is option to fade between stages. I dont want to get into too many details just clone my fork and have a look.

What I added is support for switch designs like this... so when thumb is smaller than switch background.

It's very simple and quick fix I did. It took me like 20 mins to add it so and code is probably not perfect but i think you can use it to add this option :)

Regards

![switch](https://f.cloud.github.com/assets/607690/319123/43e82b7e-98b2-11e2-9405-d5e905bc573c.png)