Adafruit-circuitpython-is31fl3731

Updated filenames in `examples/`, to better define what they're for. Especially helpful for the example bundles.

Thanks makermelissa for the updates!

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-is31fl3731`.

Read the [docs](http://circuitpython.readthedocs.io/projects/is31fl3731/en/latest/) for info on how to use it.

Charliebonnet layout is now a supported subclass. Examples updated to use simpler i2c init, and `adafruit_framebuf` instead of the deprecated `framebuf`

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-is31fl3731`.

Read the [docs](http://circuitpython.readthedocs.io/projects/is31fl3731/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-is31fl3731`.

Read the [docs](http://circuitpython.readthedocs.io/projects/is31fl3731/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-is31fl3731`.

Read the [docs](http://circuitpython.readthedocs.io/projects/is31fl3731/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-is31fl3731`.

Read the [docs](http://circuitpython.readthedocs.io/projects/is31fl3731/en/latest/) for info on how to use it.

Thanks to sommersoft for the great work!