* Optimize install process If `getenforce` is not exist, then do not execute it. This fixes the `command not found` error on Arch Linux systems without SELinux installed. * bump installer version
Arch 的官方源中不含有`yay`,安装脚本亦没有检查`base-devel`包和`git`包是否存在,正确方法是克隆仓库后使用`makepkg`安装`libselinux`