title: Rails Faker how to create custom method
body: <p>I'm using rspec and faker for testing and I want to add a cuestom field on faker, I had followed this instructions:</p>
  
  <p><a href="https://github.com/stympy/faker#customization" rel="nofollow">https://github.com/stympy/faker#customization</a></p>
  
  <p>So in my rails_helper.rb I have this line:</p>
  
  <pre><code>Faker::Config.locale = :ca
  </code></pre>
  
  <p>And in my ca.yml under config/locales folder I have:</p>
  
  <pre><code>faker:
      internet:
        usefuldata: [AAAAA,BBBBB]
  </code></pre>
  
  <p>And when I made <code>Faker::Internet.usefuldata</code> it returns undefined method 'usefuldata' for Faker::Internet:Class. And I want that <code>Faker::Internet.usefuldata</code> return AAAAA or BBBBB.</p>
  
  <p>Thanks in advance.</p>