Do not use notify for unarchiving packerio
Ensure tar/unzip are installed for unarchive module to work
Do not support a wide range of OS anymore
Remove unnecessary comments in defaults.
Update some documentation
ansible-packerio 0.5.0
Merge branch 'ansible-packerio-0.5.0'

* ansible-packerio-0.5.0:
  ansible-packerio 0.5.0
  Update some documentation
  Remove unnecessary comments in defaults.
  Do not support a wide range of OS anymore
  Ensure tar/unzip are installed for unarchive module to work
  Do not use notify for unarchiving packerio