Adafruit-circuitpython-bluefruitconnect

* Read characters until a start-of-packet character is read.
* Fix incorrect packet length for LocationPacket.

This fixes the library issues that caused [adafruit/circuitpython1568](https://github.com/adafruit/circuitpython/issues/1568). The CircuitPython issues were fixed by
[adafruit/circuitpython1518](https://github.com/adafruit/circuitpython/pull/1581).

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

Read the [docs](http://circuitpython.readthedocs.io/projects/bluefruitconnect/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).

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

- Add `ButtonPacket.BUTTON_1`, `BUTTON_2`, `BUTTON_3`, `BUTTON_4`, `UP`, `DOWN`, `LEFT`, `RIGHT`.
- Remove crickit_test example, since it's now in a guide.
- Add AccelerometerPacket example.
- Improve documentation.

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

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

- A simpletest was missing.
- Renamed crickit test to be more standard.
sphinx-build had never been done. Fixed a number of problems.

Supports encoding and decoding of data packets used by the Adafruit Bluefruit Connect apps.

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

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