Grunfile.js

module.exports = function(grunt) {

  // Project configuration.
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    coffee: {
      compileWithMaps: {
        expand: true,
        src: ["src/*.coffee"],
        dest: "js/",
        ext: ".js",
        options: {
          sourceMap: true
        }
      }
    }
  });

  // Load the plugin that provides the "uglify" task.
  grunt.loadNpmTasks('grunt-contrib-coffee');

  // Default task(s).
  grunt.registerTask('default', ['coffee']);

};