团购价格阶梯

添加功能已经实现
Merge branch 'master' of https://github.com/yh392261226/mall

* 'master' of https://github.com/yh392261226/mall:
团购价格阶梯
写入忽略文件

Conflicts:
.gitignore
Merge branch 'master' of https://github.com/yh392261226/mall

* 'master' of https://github.com/yh392261226/mall:
  团购价格阶梯
  写入忽略文件

Conflicts:
	.gitignore