Add note about Sidekiq's polling interval to README.
Add documentation for Sidetiq::Clock.
Add documentation for Sidetiq::VERSION.
Add documention for Sidetiq::Schedulable.
Nodoc for Sidetiq::Clock.method_missing.
Add documentation for Sidekiq namespace.
Add documentation for Sidekiq::Schedule.
Add documentation for the Sidetiq config accessors.
Remove blank line.