UPDATE INSTRUCTION:
The following files has been changed in version 3.0

Modules Files

  1. MerchantappModule.php
  2. components/merchantApp.php
  3. controller/AjaxController.php
  4. controller/ApiController.php
  5. controller/CronController.php
  6. controller/IndexController.php
  7. controller/UpdateController.php
  8. views/layouts/header.php

Mobile app files

  1. www/js/app.js
  2. www/index.html
  3. config.xml