MVC4 Grunt setup

gruntfile.coffee

module.exports = (grunt) ->
  grunt.initConfig
    pkg: grunt.file.readJSON('package.json'),
    sass: # Task
      dist: # Target
        files: # Dictionary of files
          "Bitcadia.Web/Content/Site.css": "Bitcadia.Web/sass/Site.scss" # 'destination': 'source'

      dev: # Another target
        options: # Dictionary of render options
          includePaths: ["Bitcadia.Web/sass/foundation/"]

        files:
          "Bitcadia.Web/Content//Site.css": "Bitcadia.Web/sass/Site.scss"
    requirejs:
      compile:
        options:
          dir: "./Bitcadia.Web/Scripts-built"
          appDir: "./Bitcadia.Web/Scripts"
          baseUrl: "./"
          mainConfigFile: "./Bitcadia.Web/Scripts/App/ref.js"
          
          optimize: "none"
          #optimize: 'uglify2',
          generateSourceMaps: true
          preserveLicenseComments: false
          paths:
            requireLib: "./require"
            ref: "./App/ref"
            main: "./App/main"
            viewData: "empty:"

          modules: [
            
            #First set up the common build layer.
            
            #module names are relative to baseUrl
            name: "main"
            include: [
              "requireLib"
              "ref"
              "jquery"
              "knockout"
            ]
          ]
  
  grunt.loadNpmTasks "grunt-contrib-coffee"
  
  grunt.loadNpmTasks "grunt-contrib-requirejs"
  
  grunt.loadNpmTasks "grunt-sass"

    # Default task.
  grunt.registerTask 'default', ['sass:dist','requirejs:compile']

package.json

{
  "name": "Bitcadia",
  "version": "0.1.0",
  "description": "",
  "scripts": {},
  "author": "",
  "license": "",
  "devDependencies": {
    "grunt-cli": "~0.1.13",
    "grunt": "~0.4.2",
    "requirejs": "~2.1.10",
    "grunt-contrib-requirejs": "~0.4.1",
    "grunt-contrib-coffee": "~0.10.1",
    "grunt-contrib-watch": "~0.5.3",
    "grunt-sass": "~0.6.1"
  },
  "dependencies": {
    "requirejs": "~2.1.10"
  }
}