title: jsPdf add margins to pdf page
body: <p>I use jsPdf for creating pdf from html. How can I add margings (top, left, right) to my pdf page? </p>
  
  <pre><code>     var doc = new jsPDF('p', 'pt', 'letter');
      doc.addHTML($('#template_invoice')[0], function () {
          ...
      });
  </code></pre>
  
  <p>Thanks for any help!</p>