gistfile1.js

watch: {
  scripts: {
    files: [js + '/**/*.js'],
    tasks: ['concat:js'],
  },
  handlebars: {
    files: ['templates/**/*.hbs'],
    tasks: ['handlebars'],
  },
  css: {
    files: ['stylesheets/*.css'],
    tasks: ['concat:css'],
  },
}