fix: 修改几处不严格的变量类型

See merge request back-end/easy-http-sdk!5

Feat: del uuid library require

See merge request back-end/easy-http-sdk!4

docs: 更新Readme

See merge request back-end/easy-http-sdk!3

fix: 修改可执行文件权限异常的问题

See merge request back-end/easy-http-sdk!2

Resolve "fix: 降低uuid版本，兼容低版本PHP"

Closes #1

See merge request back-end/easy-http-sdk!1