fix pdf print bug in chrome 33 #808
update (c) year
Tweak layout in README.md installation markup.

Some code blocks weren't indented, so they ended up messing up the numbering. Indenting them fixed it.
update version to 2.6.2 to fix broken tarball on npm #506
Merge pull request #832 from craigcitro/patch-1

tweak layout in readme installation markup
Merge branch 'master' of git://github.com/hakimel/reveal.js into lvh
Tweaks
Revert to hakimel's index.html