sidekiq provider only sets ownership of log file, not dir
Working directory can be set on sidekiq resource
Arbitrary worker_file can be set on sidekiq resource

When using sidekiq outside of Rails, it is helpful
to be able to require an arbitrary file in a project
to load sidekiq workers.

Changing -r RVM_DIR to -R, so that -r can match
sidekiq REQUIRE command line option.
Bump version to 0.7.0