Adafruit-circuitpython-ble

Allow UARTServer.write() to write buffers of indefinite length.

Improve UARTServer example: now retries after connection dropped.

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/ble/en/latest/) for info on how to use it.

Includes:
- `LocationBeacon` - an iBeacon-style beacon
- `EddystoneURLBeacon`
- `UARTServer` - a `Peripheral` running an implementation of the Nordic UART Service (NUS). Provides a stream interface for reading.

_[note - not yet in bundle as of the date of this release, but will be added soon]_

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/ble/en/latest/) for info on how to use it.