Odd, what link did you click to get to that url? If you follow this link http://artsy.github.io/scroll-frame/ it should show a bunch of cute little kittens infinitely adding themselves to your page: http://cl.ly/image/1d2z2h0G3Z1U
Clicking on one of the kittens gives me a blank page, and then clicking back brings up the list again but it has the "Loading..." overlay indefinitely.
This experience definitely didn't sway my opinion that infinite scrolling is really annoying.