I added resources registrator class.
I fixed a bug into tests.
I added the singleton utility decorator as well as resources registrator.
I improved the unit tests for registrator. I improved the runner for integration / unit tests.
I updated basic settings documentation. I added discovery controller listing.
I suppressed the unused argument warning for discovery controller listing.
I fixed a bug in discovery controller: now it is marked as ControllerProvider.
I added integration tests and samples for roa discoverability.
I updated the resources registrator so that it also match folder patterns.