Merge branch 'readthedocs' of https://github.com/dplanella/adafruit-beaglebone-io-python into readthedocs

Author: dplanella

README.md

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 # Adafruit BeagleBone I/O Python Library (Adafruit_BBIO)
 
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 * Adafruit_BBIO is a set of Python tools to allow [GPIO](README.md#gpio-setup), [PWM](README.md#pwm), [ADC](README.md#adc) and [UART](README.md#uart) access on the BeagleBone