title: what does the --yes parameter at npm init mean?
body: <p>What does the --yes parameter at npm init mean? 
  I saw it <a href="https://devcenter.heroku.com/articles/node-best-practices#start-every-new-project-with-npm-init" rel="noreferrer">here</a> and would like to know what it does exactly.
  Is there a difference between --y and --yes? </p>