Add license
Set artefact path for router registration

If a path is present in the artefact then panopticon will register the
artefact with the router upon publication. Note that specifiying 'path'
causes an exact path route to be registered (as opposed to a prefix
route).
Merge pull request #12 from alphagov/set-artefact-path-for-router-registration

Set artefact path for router registration