Todo Example

Hi Seth,

Do you have a need for a Todo example?  Apologies for the bloated css, I should be able to tone that down a bit if you are interested.

Thanks!
Richard

![todo-dart-polymer](https://f.cloud.github.com/assets/1296901/1069608/e81d7224-1424-11e3-9d8e-82459b52de39.jpg)