在用Homebrew安装Kong的时候，报没有权限
Error: Your user does not have write permissions in /usr/local
-- you may want to run as a privileged user or use your local tree with --local.
解决方法：
修改安装目录的权限
sudo chown -R "$USER":admin /usr/local
以及
sudo chown -R "$USER":admin /Library/Caches/Homebrew
