Added begin(TwoWire*)

Tweaks

Merge pull request porrey#8 from porrey/ESP-32-Support

Esp 32 support

Update library.properties

Update README.md

Delete MAX17044.h

Merge pull request porrey#6 from porrey/new-constructor

New constructor

Merge pull request porrey#2 from ewpa/voltage-fix

Change the method of converting the 12 bit sampled ADC value

Added detail.