grails asset-pipeline not accessing web-app/* files

I'm using "Grails-2.4.4" and I've added compile "org.grails.plugins:asset-pipeline:2.14.1.1" plugin to give support for dynamic assets loading on my web page. I've all(js,css) resources available in the web-app folder itself. Now I've created application.js file in "assets/images/javascripts" folder. From this file I'm trying to access all existing files from web-app folder, something like below,

//=require_full_tree ../../../web-app/js

But it is not working.

Can someone suggest the best way to handle this situation?