This is a "source" charm, which is intended to be strictly the top layer of a built charm. This structure declares that any included layer assets are not intended to be consumed as a layer from a functional or design standpoint.
Test and Build
Building, pushing and publishing to the charm store is automated by CI to ensure consistent flow. Manually building is useful for development and testing, however.
tox -e pep8 tox -e py34 # or py27 or py35 tox -e build
Freenode IRC: #openstack-charms