DrinkShield url is broken

[mattherman]

The DrinkShield link provided in the README (http://www.gfxhax.com/drinkshield/) is broken. I would submit a pull request, but I was unable to find a valid link.

[jacebrowning]

http://shieldlist.org/gfxhax/drinkshield is up, but that's not much better because most of the links on the page are broken.