Zigbee2mqtt: Fork documentation into a new repository

[dgomes]

Looking at the commit history, most of it is related to documentation.

I believe the documentation has grown into a stage that it should live in it's own repo, else it's very difficult to track actual changes in zigbee2mqtt.

[Bruceforce]

Or use a wiki in the main repo maybe?

[ryanbeaton]

@Bruceforce It used to be in the wiki. It was moved into the repo in November

[dgomes]

it just needs to go into it's own repo... "zigbee2mqtt-doc"

[Koenkk]

@dgomes completly agree, as this changes the url, ive registered http://www.zigbee2mqtt.io . Will point this to the zigbee2mqtt-docs repo.

[Koenkk]

Done, docs are now in https://github.com/Koenkk/zigbee2mqtt.io, available under https://www.zigbee2mqtt.io/