move from `GL.Component` to `GL.createComponent` allowing more styles of defining components

[gre]

move from `GL.Component` to `GL.createComponent` allowing more styles of defining components

[gre]

decorator is probably a better answer than a GL.Component to extend.. We will likely move to this in next major release.

GL.createComponent(foo)

This is especially important as you could provide a function instead of a class for this foo (as introduced by React 0.14 https://facebook.github.io/react/blog/2015/09/10/react-v0.14-rc1.html ). The current inheritance approach won't allow this.
We can also either provide a React Component created via React.createClass (not possible today) or via ES6 inheritence.

Ultimately I would also like to address this: how to provide a captureFrame method on all GL Component (on top of having it on a GL.View). Not sure what's the best way to do this.

[gre]

will address this soon and deprecate GL.Component