Change-Id: I99ff9fb980dff37e58abd4e027204d36ce5aa278
Adding a tox.ini to allow lint to happen over the code. This also allows commits to land. unit tests will be forthcoming when https://github.com/juju/charm-tools/issues/249 is resolved. Change-Id: I8140ced05d1898f7561337e0e1f82570e0fcbcaa