Added a new function, `wrap_by_pixels()` that allows you to set the text to wrap at a certain number of pixels.
Thanks for the PR FoamyGuy!
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-display_text`.
Read the [docs](http://circuitpython.readthedocs.io/projects/display_text/en/latest/) for info on how to use it.