Tool tip is not working

Hi
Initialized the pen as ::
var options = {
editor: document.getElementById("description"), // {DOM Element} [required]
class: 'pen', // {String} class of the editor,
debug: false, // {Boolean} false by default
textarea: '<textarea name="description_old_browsers"></textarea>',
list: [
'blockquote', 'h2', 'h3', 'insertorderedlist', 'insertunorderedlist', 'inserthorizontalrule',
'indent', 'outdent', 'bold', 'italic', 'underline', 'createlink'
],
title :{
blockquote : "Quote",
h2 : "Heading 2",
h3 : "Heading 3",
insertorderedlist : "insertorderedlist"
},
stay: false
};
new Pen(options);
$('i.pen-icon').tooltip();

The tool tip is coming down but with empty content