_broken-package.json

{
  "scripts": {
    "start": "brunch watch --server --port 3333",
    "build": "brunch build --production"
  },
  "dependencies": {
    "fastclick": "^1.0.6",
    "jquery": "^3.1.1",
    "normalize.css": "^5.0.0"
  },
  "devDependencies": {
    "auto-reload-brunch": "^2.0.5",
    "autoprefixer": "^6.5.1",
    "bourbon": "^=5.0.0-beta.7",
    "bourbon-neat": "^=2.0.0-beta.1",
    "brunch": "^2.9.1",
    "brunch-static": "^1.2.1",
    "clean-css-brunch": "^2.0.0",
    "coffee-script-brunch": "^2.1.0",
    "font-awesome": "^4.6.3",
    "html-brunch-static": "^1.3.1",
    "javascript-brunch": "^2.0.0",
    "postcss-brunch": "^2.0.5",
    "sass-brunch": "^2.7.0",
    "uglify-js-brunch": "^2.0.0"
  },
  "license": "MIT"
}

_working-package.json

{
  "scripts": {
    "start": "brunch watch --server --port 3333",
    "build": "brunch build --production"
  },
  "dependencies": {
    "fastclick": "^1.0.6",
    "jquery": "^3.1.1",
    "normalize.css": "^5.0.0"
  },
  "devDependencies": {
    "auto-reload-brunch": "^2.0.5",
    "autoprefixer": "^6.5.1",
    "bourbon": "^=5.0.0-beta.7",
    "bourbon-neat": "^=2.0.0-beta.1",
    "brunch": "brunch/brunch#ee73ef0f92add24b46c4478fa3f0b5bc206bbe7d",
    "brunch-static": "^1.2.1",
    "clean-css-brunch": "^2.0.0",
    "coffee-script-brunch": "^2.1.0",
    "font-awesome": "^4.6.3",
    "html-brunch-static": "^1.3.1",
    "javascript-brunch": "^2.0.0",
    "postcss-brunch": "brunch/postcss-brunch#07961d39cecfbc9aa02b48259bb551e56defd4e8",
    "sass-brunch": "^2.7.0",
    "uglify-js-brunch": "^2.0.0"
  },
  "license": "MIT"
}

brunch-config.coffee

path = require 'path'

exports.config =
  # See http://brunch.io for documentation.
  npm:
    enabled: true
    # register $ and jQuery as a global so vendor plugins can run
    globals: 
     '$': 'jquery'
     'jQuery': 'jquery'

  files:
    javascripts:
      joinTo:
        # all BUT app code - 'vendor/', 'node_modules/', etc
        'js/vendor.js': /^(?!app)/ 
        # all code from 'app/'
        'js/app.js': /^app/

    stylesheets: joinTo: 'css/style.css'

  plugins:
    coffeescript:
      bare: true

    sass:
      mode: 'native'
      options:
        includePaths: [
          'node_modules/bourbon/core'
        , 'node_modules/bourbon-neat/core'
        , 'node_modules/normalize.css'
        , 'node_modules/font-awesome/scss'
        ]
      # Set the precision for arithmetic operations.
      precision: 8

      # To enable embedded source maps, pass the option `sourceMapEmbed`. This is only supported in _native_ mode; Ruby Sass isn't supported.
      sourceMapEmbed: true

    postcss:
      processors:
        require('autoprefixer')(['defaults', '> 1%'])

    static:
      pathTransform: (f) -> path.relative 'pages', f
      processors: [
        require('html-brunch-static') {
          handlebars:
            enableProcessor: true,
            helpers: {
              ifEq:      (a,b,opts) -> if a is b then opts.fn(this) else opts.inverse(this)
              ifEqDebug: (a,b,opts) -> console.log "a: '" + a + "'"; console.log "b: '" + b + "'"; if a is b then opts.fn(this) else opts.inverse(this)
              log:       (msg...)   -> console.log msg
            }
        }
      ]