title: Sidekiq goes to logs/sidekiq.log but want to go to console
body: <p>How do I change it back from sidekiq.log to the STDOUT?
  I typed in <code>bundle exec sidekiq ... -L log/sidekiq.log</code>
  but I don't want it going there. I can't monitor it very well in Heroku this way. I would just like to go back to normal, but I don't really know what I'm doing here.</p>