Merge from master and React 0.13/ES6 changes

[rob0rt]

This PR is a merge of Master into css-in-js, as well as an overhaul of the docs, converting the components into new ES5 Classes as specified in React 0.13.

Other small changes include general code cleanliness, such as converting things like:

var AppBar = mui.AppBar;
var AppCanvas = mui.AppCanvas;
var Menu = mui.Menu;
var IconButton = mui.IconButton;

to:

var { AppBar, AppCanvas, Menu, IconButton } = mui;

As well as whitespace/ newlines (automatically fixed by my IDE).

I did not convert date-picker, menus, and text-fields, as those seemed broken at the current state of the tree so I could not test to make sure I didn't break them.

[rob0rt]

I also deliberately opened this against css-in-js since I know that's where a lot of work is taking place; I can open it against master if that's better suited.

[mmrtnz]

Thanks @BobertForever! Yes css-in-js is where all the work is going on. Any PRs to that branch won't be seen until v0.8.0. This was really helpful. I can take a look at what's breaking those components and have them updated to React v0.13.