title: Include gatsby helmet script
body: <p>I can't include a script in helmet gatsby.
  The script I want to include is this:</p>
  <pre><code>  &lt;script src = &quot;assets / vendor / jquery / jquery.min.js&quot;&gt; &lt;/script&gt;
  </code></pre>
  <p>I tried doing this and the console gives me an error:</p>
  <pre><code> import Helmet from &quot;react-helmet&quot;;
      import {withPrefix} from &quot;gatsby&quot;;
      
      &lt;Helmet&gt;
      &lt;script src = {withPrefix ('masonry.js')} /&gt;
      &lt;/Helmet&gt;
  </code></pre>
  <p>with this syntax I also tried and it gives me an error:</p>
  <pre><code>&lt;Helmet&gt;
    &lt;script src = &quot;http://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js&quot; type = &quot;text / javascript&quot; /&gt;
  &lt;/Helmet&gt;
  </code></pre>
  <p><strong>How would it be solved?</strong></p>