fetch跨越405问题代理设置

[doin]

参考

• http://www.jianshu.com/p/3bdff821f859
• https://webpack.github.io/docs/webpack-dev-server.html#proxy
• http://blog.csdn.net/u010537398/article/details/52141275
• https://www.peterbe.com/plog/10-reasons-i-love-create-react-app
• https://www.npmjs.com/package/whatwg-fetch