Admin panel using Ext JS + CodeIgniter

Hello,

first of all, I'm sorry for the lack of my english, I'm not good at it.

I have the admin panel(CodeIgniter framework).

My goal is implement extjs interface from existing admin panel.

I have following structure:

Code:

root
    - admin
        - controller
        - model
        - view
            - javascript
                -extjs
            - template
                - index.php

And I have the generated ExtJS application via cmd in the folder admin/view/javascript/extjs

How I should configure the Extjs in this situation?

Admin panel using Ext JS + CodeIgniter