node运行的第一个helloWorld程序

hello world

参考链接：

• https://www.runoob.com/nodejs/nodejs-http-server.html
  

• https://npm.taobao.org/

• https://www.jianshu.com/p/03a76b2e7e00

• https://blog.csdn.net/liuyanfeier/article/details/62422742

• https://www.runoob.com/js/js-promise.html