Homebrew官网：http://brew.sh
Homebrew installs the stuff you need that Apple didn‘t
Homebrew的安装非常简单，打开终端复制、粘贴以下命令。
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"原文：http://www.cnblogs.com/foxting/p/6143133.html