Adafruit-circuitpython-ssd1306

* Added banner text to indicate requirements for examples that use Pillow.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

Updated examples and added linux demos using PIL

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

We will be removing built-in `framebuf` and moving to `displayio` in 4.x. In the meantime (and on boards without space for `displayio` like the trinket m0) you can have a slow-but-working soft framebuf. this has now been added. Please delete any old `framebuf.mpy` files and use https://github.com/adafruit/Adafruit_CircuitPython_framebuf instead. Thanks!

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

- Added `setup.py`
- Added PyPI release info to `.travis.yml`
- Updated `requirements.txt`
- Added a more comprehensive `.gitignore`

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

* Add support for more `framebuf` methods. Thanks to raidancampbell!
* Improve lint and docs. Thanks mrmcwethy !

To use in CircuitPython, download the .zip file and copy its contents to the lib folder on the CIRCUITPY drive. Or, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Addafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.