GitHub 多账号配置

[UnableRegister]

https://unableregister.github.io/#/2018-03-30/GitHub%20%E5%A4%9A%E8%B4%A6%E5%8F%B7%E9%85%8D%E7%BD%AE/03edb1b2be0738c0291a0e0eba42e3071d95afc1