title: How to reset npm files
body: <p>I was trying to install a library yesterday and I am quite new to this - long story short I messed all the files up.
  Instead of fixing my problem which I am quite unsure of what it is. I think it would be a lot easier just to reset all the files for <code>npm</code>. How can I delete and reinstall all <code>npm</code> files so it would end up as I just downloaded everything.</p>