title: How does Delayed job work in ruby script
body: <p>I want use delayed job on ruby script (not rails) but i can't find anything in delayed <code>Github</code> page or wiki page</p>
  
  <p>I want use a background job gems on ruby script like <code>resque</code> , <code>delayed job</code> , <code>sidekiq</code> or etc.</p>
  
  <p>how start background process on ruby script without rails ?</p>