title: Adding the "ok glass contextual voice menu" within an immersion activity
body: <p>Is there a way to insert the "ok, glass" trigger into an immersion activity on Glass? I want to make the launch of my application as seamless and quick as possible. Making an immersion application seemed to be the way but I can not find a way to bring up the "ok, glass" footer trigger within my activity to launch my application menu to be navigated hands free. Any clue as to how this works? </p>
  
  <p>Note: I have a voice trigger to launch the app from the Glass home screen. </p>
  
  <p>I'm not creating a card but rather just using an XML layout as I'm changing text on the screen dynamically to user interaction using an AsyncTask. Any advice would be great.</p>