20180725： windows标准的键盘连接了mac如何映射键盘？最大的好处是可以向后删除，还可以一键PageUP, PageDown
ref: https://support.apple.com/zh-cn/HT202676
Win-> Command
Alt -> Alt
Ctrl-> control
Mission Control: Ctrl+↑, Ctrl+←, Ctrl+→
LaunchPad: Win+F10, But some issue exists.
Home and End disabled sometimes.