Individual left side dot control for big 7-segment display added

Support for individual control of the left side dots added on Big 7-segment display. Thanks @vdehors

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Fixed readme to work with PyPI

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Added set_digit_raw() function to be able to create new characters

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Added Version and Repo URL

To make this compatible with circup, proper version and Repo URLs were added.

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Memory Usage Improvements

Segment definitions are now Tuples making it more memory efficient. Thanks @tannewt

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Multiple Periods

• Fix multiple periods on 7 segment

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Fixed Spaces showing as Zeroes

• Fixed Spaces showing as zeroes. If any code was relying on this behavior, it may need to be updated.

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Flicker Fix

• Fixes flicker issue associate with auto_write feature. Thanks @makermelissa

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

Update Travis Badge In Readme

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip install adafruit-circuitpython-ht16k33.

Read the docs for info on how to use it.

2.1.1: Fix PyPI / setup.py Installation

  - Changed `py_modules` to `packages` in `setup.py`

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

To use in CPython, `pip3 install adafruit-circuitpython-ht16k33`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ht16k33/en/latest/) for info on how to use it.