Gruntfile.js

/*global module:false*/
module.exports = function (grunt) {
  // show elapsed time at the end
  require('time-grunt')(grunt);
  // load all grunt tasks
  require('jit-grunt')(grunt, {});

  grunt.initConfig({
    bower: {
      common: {
        dest: "wwwroot/",
        js_dest: "wwwroot/js",
        css_dest: "wwwroot/css",
        options: {
          keepExpandedHierarchy: false
        }
      }
    },
  });

  grunt.registerTask('default', [
      'bower:common'
  ]);
};

package.json

{
  "name": "grunt-bower-tests",
  "devDependencies": {
    "grunt": "~0.4.2",
    "grunt-contrib-clean": "~ 0.5.0",
    "grunt-bower": "0.20.0",
    "time-grunt": "~0.2.9",
    "jit-grunt": "~0.2.1"
  },
  "dependencies": {
    "grunt-cli": "^0.1.13"
  }
}