Upgrade React to 0.12.0
createFactory ∘ createClass
Tests pass again

Moved key off props.
Created ReactElement{,_} although not doing much with it yet.
Travis: Use Scala 2.11.4
ReactElement and ReactNode now rule the day. Tests rebel.
ReactNode rendering
Got the little bastard!
React.createElement docs lied. Fixed. All tests now pass.
Another rendering test
Updated React top-level API to React 0.12
Restore and deprecate VDom
Edges
HISTORY.md: 0.6.0 notes
Merge branch 'react-0.12'

Fixes #28