在mac上安装zsh-autosuggestions提示工具

1. Clone this repository somewhere on your machine. This guide will assume ~/.zsh/zsh-autosuggestions.

   git clone git://github.com/zsh-users/zsh-autosuggestions ~/.zsh/zsh-autosuggestions

2. Add the following to your .zshrc:（将下列语句添加到 ~/.zshrc 文件中）

   source ~/.zsh/zsh-autosuggestions/zsh-autosuggestions.zsh

3. Start a new terminal session.