slim-lint does not respect custom rubocop configuration

[benreyn]

When enabling slim-lint on a repository, custom rubocop configuration files dont seem to automatically pick up configuration defined in a .rubocop.yml file. See here. It seems like the most sensible way to handle this is to have slim-lint use the same config_file for rubocop that is declared in .hound.yml. This could probably be done with the SLIM_LINT_RUBOCOP_CONF env variable.

[salbertson]

@gylaz is this taken care of already?

[gylaz]

@salbertson No, we don't currently support multiple configuration files per linter. In this case, we'd need to send both slim-lint config and RuboCop config to our linters services.