在AWS C9编辑器中安装NPM软件包时出错

Question

每次我尝试从npm下载软件包时，命令提示符中都会显示以下错误。

我正在追求Colt Steele的Web Dev Bootcamp，并且对Node js还是很陌生。

ec2-user:~/environment/IntrotoNPM/DemoApp 
$ npm install express 
npm WARN saveError ENOENT: no such file or directory, open '/home/ec2-user/package.json' 
npm WARN enoent ENOENT: no such file or directory, open '/home/ec2-user/package.json' 
npm WARN ec2-user No description 
npm WARN ec2-user No repository field. 
npm WARN ec2-user No README data 
npm WARN ec2-user No license field.