Error on css-layout example

Hi guys,

I'm trying to recreate the css-layout example but I get

> Can't read property 'getPooled()' of null in Surface.componentDidMount.

The difference is that I used **browserify** and did a few things:
- browserify the ReactCanvas.js in react-canvas.js.
- made "react" and "react-dom" external dependencies.

At the end I end up with two file react-canvas.js, react.js( "react" and "react-dom" modules) and app.js (the css-layout example).
Another thing is that I don't use JSX but Javascript instead.

Where could be the issue here?

Thank you in advance!

Recreate the css-layout example using the browserify setup described, including ReactCanvas.js, react-canvas.js, react.js, and app.js. Start at Surface.componentDidMount and compare the bundled setup with the example; done means identifying the cause of the getPooled() error and documenting or fixing the reproducible configuration.

Written by the indexing model from the issue text.