there's no package.json file in this folder. It's needed to build the tutorial. no server.js file either.
$ npm install
npm WARN enoent ENOENT: no such file or directory, open '/Users/johnsmith/Desktop/DEV/Tutorials/JS/javascript.client.tutorials-develop/jms/package.json'
npm WARN jms No description
npm WARN jms No repository field.
npm WARN jms No README data
npm WARN jms No license field.