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
Fix small misspelling: Mardown -> Markdown
Merge pull request #883 from seanfisk/fix-small-misspelling

fix small misspelling: Mardown -> Markdown
add contribution guidelines from dev
Merge branch 'master' of github.com:hakimel/reveal.js
use node.js 0.10
Merge pull request #1 from hakimel/master

Pull from master