title: JSON.Net Seralize values don't have quotation marks
body: <p>The following code:</p>
  
  <pre><code>var json = JsonConvert.SerializeObject(fooObject,
                                                     new JsonSerializerSettings
                                                         {
                                                             NullValueHandling = NullValueHandling.Ignore,
  
                                                         });
  </code></pre>
  
  <p>Seralizes a json (string) object of:</p>
  
  <blockquote>
    <p>{
    "fooA":0,
    "fooB":0,
    "fooC":false,
    "fooD":false,
    "fooE":0,
    "fooF":0,
    }</p>
  </blockquote>
  
  <p>The values are not in quotation marks, such as "fooA":"0". This is the behavior that I want.</p>
  
  <p>Is there a way to enforce this behavior?</p>