- Updated the WindowsPhone icon

Updated the Windows Phone icon so that the hardware buttons are no longer abstract, but recognizable, especially at larger sizes.

![appbar.windowsphone.design](http://content.screencast.com/users/RobertMcLaws/folders/Jing/media/58c2af9c-be23-4bde-aed5-38112316b850/2013-09-10_2321.png)

You will need to save it to the appropriate light and dark versions.