You can now pass in I2C pins or use the default `board.I2C()` when instantiating MotorKit.
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).
To use in CPython, `pip3 install adafruit-circuitpython-motorkit`.
Read the [docs](http://circuitpython.readthedocs.io/projects/motorkit/en/latest/) for info on how to use it.