title: Swagger UI not showing responses examples
body: <p>While using swagger-editor I create the below YAML that shows an example of the response object.  It's properly displaying in the swagger-editor.  When I then download the JSON and display it in swagger-ui, the example is completely missing.  </p>
  
  <pre class="lang-yaml prettyprint-override"><code>/person/{email}/create:
    post:
      summary: Create a new account
      tags:
        - Person
      parameters:
        ...
      responses:
        201:
          description: The new SQL ident and sport details 
          examples:
            application/json: |
              [
                12,
                [
                  {
                    "sql_idnet" : 12,
                    "name" : "Basketball"
                  },
                  {
                    "sql_ident" : 13,
                    "name" : "Ice Hockey"
                  }
                ]
              ]
  </code></pre>