Docs: demo should expose code / be runnable

[Narretz]

While trying bricks.js, I failed with a simple example. If the demo exposed the code it uses to generate the grid or if it was runnable (e.g. open it in a plnkr), trying bricks would be much easier.

[callmecavs]

sorry about that, it's a known bug. closing as this is because of #25