Fix shoddy font rendering on Chrome (Windows XP) adding SVG font

I checked the Font Awesome on many browsers (with browserstack) and I discovered that Chrome 21+ on Windows XP had a very bad rendering because of the font interpretation of Windows itself.

The solution is to add a SVG version of the font to force Chrome to render font as SVG.
![fontAwesome Chrome Windows XP](https://f.cloud.github.com/assets/1526253/49722/929ecd78-5978-11e2-8683-8a362ad2653f.png)