MySQL 5.7 Release Notes
        
To install MySQL Shell on macOS, do the following:
- Download the package from http://dev.mysql.com/downloads/shell/. 
- Double-click the downloaded DMG to mount it. Finder opens. 
- Double-click the - .pkgfile shown in the Finder window.
- Follow the steps in the installation wizard. 
- When the installer finishes, eject the DMG. (It can be deleted.) 
