Access camera using Javascript and 4.0 API

I would like to access the camera on an Android device (hopefully its the same for iPhones too).  I'm currently writing a pure javascript application (no Ruby) using RhoMobile's 4.0 API.  I've read in the docs that the Camera API has not yet been ported to 4.0, so I have to access via the 2.2 APIs.  This is where I start to get lost.  I believe I have all the necessary files included for the 2.2 API access via javascript:

build.yml:

     extensions:

       - rhoconnect-client

       - rho-javascript

     capabilities:

       - camera

index.html (main page):

<!-- required for pre-4.0 JS API -->

<script type="text/javascript" src="/public/jquery/jquery-1.6.4.min.js"></script>

<script type="text/javascript" src="/public/jquery/jquery.json-2.4.min.js"></script>

<!-- pre-4.0 JS API -->

<script type="text/javascript" src="/public/js/rho_javascript_api.js"></script>

<!-- compatibility layer -->

<script type="text/javascript" src="/public/js/rho_common_api_noconflict.js"></script>

<!-- new Common JS API -->

<script type="text/javascript" charset="utf-8" src="/public/api/rhoapi-modules.js"></script>

<script type="text/javascript" charset="utf-8" src="/public/jquery/jquery-1.9.1.min.js"></script>

.....

<div data-role="content">

  <form action="" method="post" id="findingForm">

  <button type="button" id="photoBtn">Add Photo</button>

  <button type="submit" id="findingBtn">Submit</button>

  </form>

</div>

application.js:

$('#photoBtn').on('click', function(e){

  Rho.Camera.choose_picture(function(params) {

      console.log(params);

  });

});

When I click the button above, I receive the following errors in adb logcat:

I/APP     (15917): I 02/11/2014 11:53:57:639 00003e42           HttpServer| Process URI: '/app/RhoJavascriptApi/command_handler'

I/APP     (15917): E 02/11/2014 11:53:57:639 00003e42           HttpServer| The file /app/RhoJavascriptApi/command_handler was not found

E/Web Console(15917): Uncaught SyntaxError: Unexpected token < at http://localhost:44326/public/index.html#findings:1

It seems like the javascript code is looking for a Ruby controller or something along those lines?  Or I'm completely missing something.  Any help is greatly appreciated!

Device: Getac Z710 (tablet)

Android: 4.1.1

-Mark