v3.1.7

Fixed and changed some details.
修复和改观了一些细节。

v3.1.2

Changed the code structure of PIPE and put the config variable in the above,for easier customization,added auto-identify to make certain which is your PACKAGE MANAGER (just for a fraction of distribution).
修改了pipe的代码结构，前置变量，自定义更方便，增加自动识别包管理器名称 (仅一部分发行版本)。