[Grunt] Uglify

npm install grunt-contrib-uglify

/**
 * Created by Answer1215 on 11/15/2014.
 */
module.exports = function(grunt){

    grunt.initConfig({
        uglify:{
            dist:{
                files:{
                    "dist/app.min.js": "app/**/*.js"
                }
            }
        }
    });

    grunt.loadNpmTasks('grunt-contrib-uglify');
}