Merge branch 'master' of github.com:hakimel/reveal.js into dev
remove unused head.js in barebones example #616
Merge branch 'focus-body-on-visibility-change' of https://github.com/rexxars/reveal.js into dev
code style
add autoSlideStoppable config value, allows autoSlide to be aborted on user input
Merge remote-tracking branch 'remotes/hakimel-original/dev'

Conflicts:
	README.md
	js/reveal.js
	js/reveal.min.js
	test/examples/barebones.html