Highly improve the library

What should be done before adding this lib to pypi:

[x] Add travis build with python 3 with basic unit-test (2 hours)
[x] Add possibility to install test requirement package from setup.py (1 hour)
[x] Add --debug --nodebug command option and update doc accordingly (30 min)
[x] Add more python revision in travis and be sure everything is fine (2 hours)
[x] Fully implement unit-test with codecov (10 hours)
[x] Launch test with python 2.7 and check if possible to add python 2.7 compatibility (between 1 and 5 hours)
[x] Update documentation to add information on how to build/launch test (1 hour)
[x] Change major revision of the lib + tag (1 hour)
[x] Add repository in pypi (pip) repositories

QuentinCG / Milight-Wifi-Bridge-3.0-Python-Library