assets/             contains assets definition
包含资源定义
      commands/           contains console commands (controllers)
包含命令行命令，控制器
      config/             contains application configurations
包含应用程序配置
      controllers/        contains Web controller classes
包含web 控制器类
      mail/               contains view files for e-mails
包含视图文件和邮件
      models/             contains model classes
包含模型类
      runtime/            contains files generated during runtime
包含运行时文件
      tests/              contains various tests for the basic application
包含各种测试的基本应用程序
      vendor/             contains dependent 3rd-party packages
包含依赖第三方的包
      views/              contains view files for the Web application
包含WEB应用程序的视图文件 即网页模版
      web/                contains the entry script and Web resources
包含脚本条目和 web 资源