UI Improvements

* Renamed range to auto
* Added heating set point slider to support auto mode
* Updated icons
Additional UI Cleanup
Added Presence Sensor capability

Nest presence information is now exposed as a presence sensor.
Updated README.md to include Presence Sensor
Fixed presence event for away mode
Added thermostatOperatingState Tile

* Added thermostatOperatingState tile
* Fix for 'not present' presence events
* Additional UI tweaks
Additional presence fixes
Fahrenheit/Celsius and Optional SetPoint Buttons

* Added toggle for Fahrenheit/Celsius
* Added manual config option to change from slider to buttons.
Revert "Fahrenheit/Celsius and Optional SetPoint Buttons"

This reverts commit 2bbac582cf9081335275bc14ac2c9a63798622c1.
Fahrenheit/Celsius and Optional SetPoint Buttons

* Added toggle for Fahrenheit/Celsius
* Added manual config option to change from slider to buttons
Documentation and temp tile color updates
Fixed issue setting coolingsetpoint
Merge pull request #18 from notoriousbdg/master

UI Improvements