Use module to for sidekiq example

Thanks for creating Eye! It's working well so far as a replacement for God.

I had to create several Sidekiq watches for my application. I came up with an elegant approach using a module, which avoids having to pass the proxy class around.
imho `start_command "./bin/sidekiq ..."` is enough (without `ruby` at the beginning). https://github.com/mperham/sidekiq/blob/master/bin/sidekiq#L1