jschain: component, react, and koa (#7)

I’ve started playing with Component again after finding some neat devs/projects/companies that use it. I also checked out ES6 generators in the development version of node and Koa which uses generators. Pretty neat stuff!

I created an example app that uses both Koa and Component but doesn’t do anything server-side. A possible future project is to make my example app use a server-side JSON API to do something.