title: What does a member and collection route mean?
body: <p>Reading this: <a href="http://guides.rubyonrails.org/routing.html#adding-more-restful-actions" rel="noreferrer">http://guides.rubyonrails.org/routing.html#adding-more-restful-actions</a></p>
  
  <p>What does it mean to add a 'member route'?</p>
  
  <p>or do add a route to the collection?</p>
  
  <p>What is a member and a collection when talking about routes?</p>