This is a pretty nice library. I used it for an interactive piece in our GitHub Flow guide. https://guides.github.com/overviews/flow/
Always cool to see a real world example.
Our team has been making heavy use of this library in the last month. We'll have things cool things to show very soon. :)
This was posted a few months back, but here's another example post from tympanus. https://news.layervault.com/stories/9694-animated-svg-icons-using-snapsvg