Changelog:
=============
* BREAKING: Renamed pyais/main.py to pyais/ais_decode.py
direct imports from pyais.main will fail
* added ais-encode as installable CLI tool via pip install
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
