cli cleanup

Merge branch 'master' of https://github.com/ArkEcosystem/arky

Update __init__.py

Merge pull request #28 from Moustikitos/master

Minor improvements

Merge pull request #24 from Moustikitos/master

code tweak version 0.3-rc6

Merge pull request #22 from Moustikitos/master

0.3.0 pre release