title: Secure sensitive data (credit card) on RoR
body: <p>Which are the best practice to store a credit card and billing information from my clients on my RoR application?</p>
  
  <p>Actually I'm working with ruby 1.9.2, Rails 3.2.3 and Im thinking to deploy my app in Heroku.</p>
  
  <p>Any help will be appriciated!</p>