Add in support for changing the status of GE Link Light Bulbs

Heya!

Added in support for changing the status of a GE Link Light Bulb. Only added in the general things (rename, turn on, turn off, brightness level). Hope it's alright. I tried to stick to your coding standards that I observed.

I used the template of yours to base this off of, I plan on buying more Wink devices in the coming weeks so I'll be adding support for more if interested (Honeywell Wi-Fi Thermostat, Lutron Switches / Outlets).