Gruntfile.js

module.exports = function(grunt) {
  var config = {};

  // Set all the tasks you want to load.
  var tasks = [
    , "grunt-contrib-concat"
    , "grunt-contrib-uglify"
    , "grunt-contrib-jshint"
    , "grunt-contrib-watch"
  ];

  // Minify JavaScript.
  config.uglify = {};
  config.uglify.dist = {
      options: {report: "gzip"}
    , files: {
        "pin.min.js": "pin.js"
      }
  };

  // Concatenate files.
  config.concat = {};
  config.concat.dev = {
    files: {
      "pin.js": [
          "pin/vendor/emitter.js"
        , "pin/vendor/module.js"
        , "pin/model.js"
        , "pin/helpers.js"
        , "pin/view.js"
      ]
    }
  };

  // Set up jshint.
  config.jshint = {};
  config.jshint.dist = {
      options: {jshintrc: ".jshintrc"}
    , files: {
        all: ["pin/*.js"]
      }
  };

  config.jshint.dev = {
      options: {jshintrc: ".jshintrc.dev"}
    , files: {
        all: ["pin/*.js"]
      }
  };

  // Set up the watch rules.
  config.watch = {};
  config.watch.scripts = {
      files: ["pin/**/*.{css,scss,js,hbs}"]
    , tasks: ["dev"]
  };

  // Register the development task.
  grunt.registerTask("dev", ["jshint:dev", "concat:dev"]);

  // Register the production task.
  grunt.registerTask("build", ["jshint:dist", "concat:dev", "uglify"]);

  // Initialize Grunt and load all tasks.
  grunt.initConfig(config);
  tasks.forEach(grunt.loadNpmTasks);

  // Set default task.
  grunt.registerTask("default", ["dev"]);
};