title: use particles.js in webpack by installing with npm
body: <p>I installed particles.js with: <code>npm particles.js --save</code></p>
  
  <p><strong>Error</strong>: bundle.js:54 GET <a href="http://localhost:8080/particles.json" rel="nofollow noreferrer">http://localhost:8080/particles.json</a> 404 (Not Found)</p>
  
  <p>I have tried different paths but it doesn't seem to work.  </p>
  
  <p>In the file <strong>app.js</strong>:</p>
  
  <pre><code>import 'particles.js/particles';
  const particlesJS = window.particlesJS;
  particlesJS.load('particles-js', 'particles.json', null);
  </code></pre>
  
  <p><strong>Folderstructure:</strong><br>
  - index.html<br>
  - src/js/app.js<br>
  - src/js/particles.json</p>