title: Active Admin Rails generating CSV file
body: <p>I have one problem with CSV files generated in active admin in rails. I use default link to download csv and set admin like:</p>
  
  <pre><code>csv do
      column :profile_name
      column :account_number
      column :title
      column :amount
      column :status
  
  end
  </code></pre>
  
  <p>But in first row on generated file there are model columns name - how can i remove it?</p>