Download files from xbmc lib.

Inspired by @G-Ray s addtion to download files from maraschino, thanks for the heavy lifting ;)

- Does not work on IE (get a better browser), IOS
- Android and safari desktop is not tested

![image](https://cloud.githubusercontent.com/assets/1214134/2951022/aa3539a6-da21-11e3-834e-3e0df455df0c.png)