title: How should i exclude all node_modules in electron-packager
body: <p>I'm using electron-packager for creating an electron.exe of my app. I need to exclude all node modules . I tried the following</p>
  <pre><code>--ignore=node_modules
  </code></pre>
  <p>The above is not working. Any idea how to exclude all folders/ remove node modules in final build.</p>