Merge pull request #21 from iwanbk/pypi-package

[mgmt] #20: fix setup.py (pypi package builder)

remove broken images on README

Merge pull request #18 from gbour/doc

Merge pull request #17 from gbour/v3.1.1

feat: set granted_qos as list instead of bytearray in EventSuback (handle_suback() callback)

doc: update pubnya/subnya example programs

doc: add simple samples

doc: add LICENSE file (BSD License)

doc: complete README file (using markdown syntax)

feat: simplify use of module (exporting main classes in __init__.py

feat: read/decode *session present* header in CONNACK response (v3.1.1)

feat: add MQTT version variable (support both MQTT 3.1 and 3.1.1)

Merge pull request #16 from gbour/feat-unsuback

feat: implement UNSUBACK message (incoming only)