$selection behaviour when range = false

awesome plugin.
i made a few tweaks to give more options for styling, which allows for even more beautiful sliders. e.g.

![Screen Shot 2013-04-04 at 08 41 09](https://f.cloud.github.com/assets/640611/337946/128fdb24-9cfb-11e2-8beb-7db231fb5325.png)