Ember Addon treeForPublic, so included assets from addon would not be namespaced.

index.js

/* jshint node: true */
'use strict';

var Funnel        = require('broccoli-funnel');
var mergeTrees    = require('broccoli-merge-trees');

module.exports = {
  name: '<your addon>',
  
  /**
   * Override default implementation for treeForPublic, because we want non namespaced assets
   *
   * @see https://github.com/ember-cli/ember-cli/blob/master/ADDON_HOOKS.md#treefor-cont
   */

  treeForPublic: function(tree) {
    var assetsTree = new Funnel('public');
    return mergeTrees([tree, assetsTree], {
      overwrite: true
    });
  }
};