title: Mustache.js - display key instead of value
body: <p>I am using this data here: <a href="http://pastie.org/3231052" rel="noreferrer">http://pastie.org/3231052</a> - How can I display the key instead of the value using Mustache or Handlebars?</p>
  
  <pre><code>[{"interval":"2012-01-21",
    "advertiser":"Advertisers 1",
    "offer":"Life Insurance",
    "cost_type":"CPA",
    "revenue_type":"CPA",
    ... etc ...
  }]
  </code></pre>