blink1: Sample HID app to control a blink(1) mk2 device.

This app demos the new chrome.hid API by controlling a blink(1) mk2 RGB
LED light. More interesting features (don't love RGB sliders?) coming soon!

http://blink1mk2.thingm.com/
I don't know how to make the `<input type="color">` element's actual color picking UI inline in the page. It just shows up as a color swatch.