Load hinted webfonts in Windows

Windows browsers loads a CSS file containing the rules pointing to hinted webfonts (in pasteup).

This is a MVP to add support for Windows machines.

Thanks to @ianfeather for the simple async loader in his presentation http://ianfeather.co.uk/web-fonts-and-the-critical-path/

![ ](http://2.bp.blogspot.com/-x48uTCCtB7I/UlPOIzyMuRI/AAAAAAABAFA/EokpKgRAP3w/s1600/Deception.gif)