Clarify steps required to create an NPM module

[adamzerner]

In following the directions in the "Steps" section I get the following error after running npm publish:

npm ERR! code ENEEDAUTH
npm ERR! need auth This command requires you to be logged in to https://registry.npmjs.org/
npm ERR! need auth You need to authorize this machine using `npm adduser`

npm ERR! A complete log of this run can be found in: /Users/adamzerner/.npm/_logs/2024-02-02T07_19_33_940Z-debug-0.log

It looks like there are more steps to complete. I think that it would be helpful for dnt's docs to mention this, and perhaps link to a place where these steps are documented.

[bebraw]

https://docs.npmjs.com/cli/v10/using-npm/developers covers the needed steps well. It's a good idea to use OTP (--otp flag) for a safer workflow. For serious usage I recommend setting up a GitHub Action to publish when you tag a new version through git.