new paused mode feature (closes #144), controls and progress DOM elements are no longer required in HTML

  font-size: 18pt; instead of fount-size: 22pt;
  remove the "a" tag from def that forces font size, otherwise anchors in various contexts, e.g., headings, etc., will cause ugly rendering due to mismatched font size.
   specify font size for "pre" tags so that code listings more closely match browser rendering

update package.json for node 0.8+

It's pretty nice to have markdown in slides. It's even nicer to have
markdown in speaker notes too :)

It can be tedious to load up the speaker notes, with the whole having to
open the javascript console, and clicking on the link.

This simplifies it by automatically opening the notes in a new window.
Most browsers will warn that it's trying to open a pop-up, but it's easy
enough to allow it.