update package.json for node 0.8+

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.

Fix Socket.IO URL

theme swap relative to theme file

typo

Note that socket.io and a few others are not shipped by default

Ensure images are bound within the section

made page validate

Previously, descenders from characters like 'g' or 'y' were truncated (overflow: hidden)

woohoo! reveal.js is now HTML5 compliant! 

this is validated using the http://validator.w3.org/ and the http://html5.validator.nu/ services.

this was accomplished using a tad of JavaScript to get around a fullscreen bug.

This also (slightly unintentionally but helpfully) solves a tiny bug with fullscreening in old Opera 11.52 (I think, could be 11.51 or other)

added appropriate selection color