Update LAN protocol

[suhajdab]

It would be great to be able to communicate with the Lifx bulbs directly rather than across half the web (via the REST api).
The protocol docs are now openly available, so a more knowledgable person could implement them. :)
https://github.com/lifx/lifx-protocol-docs

[petrklus]

@magicmonkey Second that, would be great to have a proper implementation!

[Venryx]

For others browsing, here are two alternatives, which appear to be developed based on the official API:
https://github.com/MariusRumpf/node-lifx
https://github.com/futomi/node-lifx-lan