[react-native] React Native Support

First of all, thank you for the incredible library. It really solves so many fundamental issues I had with embedding CSS in my react projects.

I recently began work on a bit of a test project using react-native to build a universal app and would really like to incorporate JSS. I see that react-native support is on the roadmap, so I was wondering if there has been any attempts at this thus far? If not, I may be so inclined to take a stab at it on a fork.