old_contents: var pickFiles = require('broccoli-static-compiler');
  var filterCoffeeScript  = require('broccoli-coffee');
  var filterTemplates     = require('broccoli-template');
  var vndFilterES6Modules = require('broccoli-dist-es6-module');
  var compileSass         = require('broccoli-sass');
  var autoprefixer        = require('broccoli-autoprefixer');
  var mergeTrees = require('broccoli-merge-trees');
  var templateCompiler = require('broccoli-ember-hbs-template-compiler');
  var instrument = require('broccoli-debug').instrument;
  
  var lib                 = 'lib';
  var scss                = 'scss';
  
  function filterES6Modules(tree, opts) {
    return vndFilterES6Modules(tree, opts);
  }
  
  var styles = compileSass([scss], 'emberui.scss', 'emberui.css');
  styles = autoprefixer(styles);
  
  var defaultTheme = compileSass([scss], 'default-theme.scss', 'default-theme.css');
  defaultTheme = autoprefixer(defaultTheme);
  
  var templates = pickFiles(lib, {
    srcDir: '/templates',
    destDir: '/templates'
  });
  
  //instrument.print(templates)
  templates = templateCompiler(templates, {
    module: true
  });
  
  lib = mergeTrees([lib, templates]);
  /*
  lib = filterTemplates(lib, {
    extensions: ['hbs'],
    compileFunction: 'Ember.Handlebars.compile'
  });
  */
  
  lib = filterCoffeeScript(lib, {
    bare: true
  });
  
  lib = filterES6Modules(lib, {
    global:      'eui',
    packageName: 'emberui',
    main:        'emberui',
  
    shim: {
      ember:      'Ember',
      handlebars: 'Handlebars'
    }
  });
  
  module.exports = mergeTrees([lib, styles, defaultTheme]);
  
new_contents: var pickFiles = require('broccoli-static-compiler');
  var filterCoffeeScript  = require('broccoli-coffee');
  var filterTemplates     = require('broccoli-template');
  var vndFilterES6Modules = require('broccoli-dist-es6-module');
  var compileSass         = require('broccoli-sass');
  var autoprefixer        = require('broccoli-autoprefixer');
  var mergeTrees = require('broccoli-merge-trees');
  var templateCompiler = require('broccoli-ember-hbs-template-compiler');
  var instrument = require('broccoli-debug').instrument;
  
  var lib                 = 'lib';
  var scss                = 'scss';
  
  function filterES6Modules(tree, opts) {
    return vndFilterES6Modules(tree, opts);
  }
  
  var styles = compileSass([scss], 'emberui.scss', 'emberui.css');
  styles = autoprefixer(styles);
  
  var defaultTheme = compileSass([scss], 'default-theme.scss', 'default-theme.css');
  defaultTheme = autoprefixer(defaultTheme);
  
  var templates = pickFiles(lib, {
    srcDir: '/templates',
    destDir: '/templates'
  });
  
  templates = templateCompiler(templates, {
    module: true
  });
  
  lib = mergeTrees([lib, templates]);
  
  lib = filterCoffeeScript(lib, {
    bare: true
  });
  
  lib = filterES6Modules(lib, {
    global:      'eui',
    packageName: 'emberui',
    main:        'emberui',
  
    shim: {
      ember:      'Ember',
      handlebars: 'Handlebars'
    }
  });
  
  module.exports = mergeTrees([lib, styles, defaultTheme]);
  
subject: Remove commented code