https://github.com/adafruit/Adafruit_CircuitPython_AWS_IOT/pull/14 Fixes Importerror for MQTTException class, thanks mpechner!
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-aws-iot`.
Read the [docs](http://circuitpython.readthedocs.io/projects/aws-iot/en/latest/) for info on how to use it.