title: How to create subdomain for user in node.js
body: <p>I'd like to share some user information at username.domain.com at my application. Subdomain should be available after user create his account.</p>
  
  <p>I have found nice module that could be useful in that case: <a href="https://www.npmjs.com/package/express-subdomain" rel="noreferrer">Express Subdomain</a></p>
  
  <p>How can I do it properly using that module? Maybe this module isn't so useful so which one should I use?</p>