v1.1.0 - Replaced i2c by @abandonware/i2c

Replaced i2c by @abandonware/i2c due to node 10+ incompatibility. Thanks to @tobymarsden.

v1.0.0 - Async release with unit tests

This release is pushed to npm:
adafruit-i2c-pwm-driver-asyn@1.0.0

v0.1.0 - Initial release

Updated readme