Yes, I did some digging and it's in the Mobile ★ Boilerplate they're using: http://html5boilerplate.com/mobile.
Interesting to note about Mobile ★ Boilerplate, the
I didn't really bought the MBP.scaleFix solution, it has too much going on for it to work, and the near future seem to make it prone to break, but it's work of fellow developers that cared enough to share it with all of us. I can respect and admire that.
Removed initial-scale=1.0 from meta
Yeah, it's an HTML5 boilerplate, and some may hold that against it, but the research alone in it has great merits. This is about more heads being better than just one, flexibility, being receptive and open to new things, and the power these concepts have in the real and practical world. It saves time, it gives you a higher starting ground.
Like I said, you can learn from a rock. Unless you're the rock it self.