Added a check for moving `neopixel.py` outside of `adafruit_seesaw` mistakenly, instead of using the typically intended `neopixel` library. Thanks caternuson!
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-seesaw`.
Read the [docs](http://circuitpython.readthedocs.io/projects/seesaw/en/latest/) for info on how to use it.