title: Dropwizard support for multiple serialization formats
body: <p>It is pretty typical in a RESTful API to see endpoints that can support multiple serialization formats:</p>
  
  <pre><code>// Sends back "fizz" resource that has an id=34 as a JSON object
  http://api.example.com/v2/fizz/34.json
  
  // Sends back "fizz" resource that has an id=34 as an XML object
  http://api.example.com/v2/fizz/34.xml
  
  // Sends back "fizz" resource that has an id=34 as a binary object,
  // say, using Google Protocol Buffers
  http://api.example.com/v2/fizz/34.bin
  </code></pre>
  
  <p>I'm designing a Dropwizard service, and am trying to figure out how to implement multiple format support, but the docs are barren in this regard. Any ideas?</p>