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

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

rm extrenous whitespace

reveal.js was lacking a nice, simple, minimal theme. now it has one.
bam.

the old one was pink. while I don't have anything against pink, I just thought it might be good to make the highlight color dark brown instead.