配置ESP8266开发环境的Arduino IDE

理论上只要在首选项立面加上这一串网址：

https://arduino.esp8266.com/stable/package_esp8266com_index.json

又要在管理库中加入新的内容了呢！可是不明白为什么要这样操作总是找不到结果。后来查阅了官方的文档才明白了一些端倪：原来需要通过指定参数来定位目标节点！

请参考此链接上的安装说明：https://arduino-esp8266.readthedocs.io/en/latest/installing.html#using-git-version

Version of git application
which targets contributors and library developers.

Prerequisites
Arduino 1.6.8 (or newer, current working version is 1.8.5)

git

Python 3.x (https://python.org)

terminal, console, or command prompt (depending on your OS)

Internet connection

Uninstalling any core version installed via Board Man