Initial commit
Update README.md
分离后端程序

Signed-off-by: Meathill <meathill@gmail.com>
修复返回值的问题

Signed-off-by: Meathill <meathill@gmail.com>
如果是无法辨识的命令，就返回成功
拆分数据库连接类
忽略连接函数
Merge branch 'master' of github.com:Meatazine/backend

Conflicts:
	.gitignore
	README.md
用pdo重构了下

Signed-off-by: Meathill <meathill@gmail.com>