Pytelemetry

- I/O logging for future replay functionality. RX frames that pass CRC and all TX frames are logged at info level.
Added loggers telemetry.rx and telemetry.tx
- Added Appveyor support
- Support Python 3.3, 3.4 and 3.5
- Fixed README.md not displayed on pypi
- Created the changelog !

Module can now be imported correctly using

python
from pytelemetry import Pytelemetry

Indexed data is now understood properly
`topic:123` -> `topic` with index = 123

Note : Setup.py was updated to 1.1.1 in next commit https://github.com/Overdrivr/pytelemetry/commit/56dd57ab1b8ceb36f6bb3ee638f401bb123a1e3e

pub` with integer flags (ex : `--i16`) while sending a decimal number (`0.0`) will now pass if rounded number is close from entered number. Otherwise, it will trigger an error message and cancel the publish.
The `isclose` function that determines whether two floating numbers are close is directly drawn from python standard library

- Fixed requirement `pytelemetry>1.1.6` impossible to be met.