Switches to the *new* new Characteristics API format for the two custom Characteristics.
Switches to the *new* new Characteristics API format for the two custom Characteristics.

Fixes #247

nfarina/homebridge-legacy-plugins,nfarina/homebridge,EddyK69/homebridge,snowdd1/homebridge,inonprince/homebridge,SphtKr/homebridge,dvinc/homebridge,patricks/homebridge,nfarina/homebridge,felixekman/homebridge,dotsam/homebridge,travisdoyle/homebridge,hplato/homebridge,chrisi21/homebridge,thkl/homebridge