Hi and thank you for the book! In chapter 2 it reads: "If you're working with a fresh Node.js project, you can install the moment package like this:". But following the workflow of the book, at that point in the book, you just created your first project and executing the suggested code leads to a package-lock.json file and message: `npm notice created a lockfile as package-lock.json. You should commit this file.` Please add 1 line on this behaviour explaining the message