Merge pull request adafruit#19 from sommersoft/readme_fix_travis

Update README Travis Badge

Merge pull request adafruit#15 from davidskeck/patch-1

Fix for adafruit#11

Merge pull request adafruit#14 from kattni/pypi

Updated travis.yml and requirements.txt

Merge pull request adafruit#7 from sommersoft/new_docs

Improve Ref Docs

Merge pull request adafruit#6 from brentru/autodoc-fix

Fix autodoc

Merge pull request adafruit#4 from tannewt/lint

Update to new build process and turn on lint.

Switch to 2.x branch for MPY generation.

Fix for new I2CDevice API.

Switch to busio.

Switch to busio.