title: Actions on Google API v2 using c# webhook
body: <p>I currently have an app running on actions on google using API.AI.  I have modified all the response members to be camelCase as suggested and got it working.  Now I am trying to return a basic card, but I can not figure out how to properly return it.</p>
  
  <p>Does anyone have the most basic JSON response, returning a basic card to the Google assistant?</p>
  
  <p>currently, the most basic v2 API response I can have is the following:</p>
  
  <pre><code>{
      speech: "",
      displayText: "",
      data: {
          google: {
              expectUserResponse: true,
              isSsml: true,
              permissionsRequest: null
          }
      },
      contextOut: [ ],
      source: "webhook"
  }
  </code></pre>