Grapher draws dots

For #16 

Note: because of issue #42, I haven't implemented the dots being different colors depending on where they're facing, so when this gets merged I'll open an issue for that and drawing the selected dot in a different color. Right now, all the dots are white.

I also made the ApplicationController available everywhere as `window.ApplicationController.getInstance()` so you can mess with it in the console. And fixed some movement command bugs.

Also, I removed all the grunt-generated files from github.

Yeah! @kmdurand let me know what you think :dancers:

![screen shot 2014-08-11 at 10 34 36 pm](https://cloud.githubusercontent.com/assets/1168853/3886707/65a08076-21e2-11e4-9cba-40a9fef025f9.png)