title: HTML2PDF support for japanese language(utf8) is not working
body: <p>For report generation in PHP I am using HTML2PDF.</p>
  
  <p>It works fine with English language but not giving proper output for Japanese language.</p>
  
  <p>How can I set utg8 character in hHTML2PDF library.</p>
  
  <p>Is there a way to achieve this in HTML2PDF library.
  I am gettign output like "???????????????" instead of Japanese text</p>
  
  <p>In /var/www/html/html2pdf/locale folder following files I found
  en.csv, fr.cvs, cs.csv, da.csv</p>
  
  <p>Can we get such file for Japanese too.</p>
  
  <p>Below is my code </p>
  
  <pre><code>&lt;?php
  
  $content = ob_get_clean();
  
  // convert to PDF
  require_once('Classes/library/html2pdf.class.php');
  try {
      $html2pdf = new HTML2PDF('P', 'A4', 'en');
      $html2pdf-&gt;pdf-&gt;SetDisplayMode('fullpage');
  //      $html2pdf-&gt;pdf-&gt;SetProtection(array('print'), 'spipu');
      $html2pdf-&gt;writeHTML($content, isset($_GET['vuehtml']));
      $filename = $filename .'_'.date('Ymd');
      $html2pdf-&gt;Output($filename.'.pdf','D');//,'D'
  }
  catch(HTML2PDF_exception $e) {
      echo $e;
      exit;
  }
  </code></pre>