A word about HA -> HE integration

@aaiyar

Maybe one of you would have added thermostat support by then, at the rate you all are going!!

[Kevin's MQTT app ([Beta] MQTT beta 3d (released 5th July) - #376 by kevin) already supports the "climate" device class. I can't compare it to this app/driver but I just started using MQTT for local status updates from my Ecobee. Seems to be working quite well.

I don't have slot of expertise in this area but the MQTT side of things does feel a bit clunky at times. Maybe this method will be cleaner?