title: webpack require every file in directory
body: <p>This is my file structure</p>
  
  <pre><code>-main.js
  -SomeDir
     -fileA.js
     -fileB.js
  </code></pre>
  
  <p>What should I do if I want to load (inside <code>main.js</code>) every file in <code>someDir</code> without specifying the file names -  </p>
  
  <p>something like: <code>require(./someDir/*.js)</code> ?</p>