title: How to use bootstrap 4 in Laravel 5.4?
body: <p>I installed bootstrap 4 using npm on my laravel app. But I think bootstrap 3 working behind not bootstrap 4.<br>
  using command:</p>
  
  <ul>npm install</ul>
  
  <ul>npm install bootstrap@4.0.0-alpha.6 </ul>
  
  <p>Did I left something to do?
  Or do I need to manually import bootstrap to assets/sass/app.scss file or else?</p>