propose talk about fb-flo

Live coding is all the rage recently. They even dedicated 15 minutes for a live-coding session in the keynote at WWDC. 
[fb-flo](https://github.com/facebook/fb-flo) is a live coding tool we made at Facebook. In this talk I want to go over:

* how live coding is useful in the real world and beyond demos
* why fb-flo was made to be hackable and why it worked while non of the other live-{reload, edit} tools worked for us.
* Talk about my plans for the tool and how it could make JS development even more fun