Added Date() functionality

Added a formatted date and time, updated every 5 seconds, to the footer
of every page.

Fixed some external links on About page that were not opening in a new
window/tab.
Changed incorrectly labeled Episode 3 in Episodes page from "Episode 1"
to the correct "Episode 3".
Merge pull request #5 from escahill/version-2

Added Date() functionality.

TO-DO: meta info, comments, complete index.html latest features section, add 5 images of own creation.