Gruntfile.js

module.exports = function(grunt) {

  // Project configuration.
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    uglify: {
      options: {
        banner: '/*! <%= pkg.title || pkg.name %> - v<%= pkg.version %> - ' +
                '<%= grunt.template.today("yyyy-mm-dd") %>\n' +
                '* <%= pkg.description %>\n' +
                '<%= pkg.homepage ? "* " + pkg.homepage + "\\n" : "" %>' +
                '* Copyright (c) <%= grunt.template.today("yyyy") %> <%= pkg.author.name %>; */\n',
      },
      build: {
        src: 'assets/js/lib.js',
        dest: 'assets/js/lib.min.js'
      }
    },
    cssmin: {
      with_banner: {
        options: {
          banner: '/* Minified CSS File of <%= pkg.name %> <%= grunt.template.today("yyyy-mm-dd") %> */'
        },
        files: {
          'assets/css/style.min.css': ['assets/css/*.css']
        }
      }
    }
  });

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

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

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

};