title: Resque workers do not start properly
body: <p>I use devise and I can send mails with resque. I use this wiki:
  <a href="https://github.com/plataformatec/devise/wiki/How-To%3a-Send-devise-emails-in-background-%28Resque,-Sidekiq-and-Delayed%3a%3aJob%29">How To: Send devise emails in background (Resque, Sidekiq and Delayed::Job)</a></p>
  
  <p>I have jobs in queue but no workers. Do I have to create task, or workers?</p>