Upstream design from site

- Adds material colors and style
- Removes dep on core-layout - Fixes #19
- Support `@property` for methods/events - Fixes #12
- Support `@default` for values - Fixes #4
- Use new layout attributes - Fixes #16 

Reviewer: @sjmiles 

![screen shot 2014-07-31 at 8 10 42 pm](https://cloud.githubusercontent.com/assets/238208/3774368/7995339a-1929-11e4-8d61-ec176a61c21d.png)

![screen shot 2014-07-31 at 8 10 49 pm](https://cloud.githubusercontent.com/assets/238208/3774371/80a73534-1929-11e4-80e9-7b5bae7a2537.png)