title: dompdf and img tag, image wont show
body: <p>Here is the HTML just before $dompdf->render() and $dompdf->output() are called:</p>
  
  <pre><code>&lt;img src="http://www.example.com/images/Logo.png" /&gt;
  </code></pre>
  
  <p>All other invoices display the image fine when viewing in the browser, or printing it, or emailing it as HTML. When I click 'Generate PDF' inside of our application, it renders the invoice in PDF, except the logo is missing. I have put a debugging line in to email me the raw HTML it sends to the render(), and it looks fine to me.</p>
  
  <p>Does anyone have any idea why dompdf won't display this image?</p>