Added the ability to set the display to sleep and wake it back up. Thanks Nico04!
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-ssd1322`.
Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1322/en/latest/) for info on how to use it.