title: Rails 3 - Customizing the Error & 404 pages
body: <p>I'm building a Rails 3 app on Heroku. Right now my error pages and 404 page are all standard rails/heroku pages.</p>
  
  <p>I'd like to customize these two. Have a page for an error, and have a page for a 404.</p>
  
  <p>All the tutorials found on google are years old, and don't work on Rails 3.</p>
  
  <p>Can you please suggest a good modern tutorial or tips on how to do the above? </p>
  
  <p>Thanks</p>