Add auto-slide API and data-autoslide for fragments
Update README.md
Merge branch 'autoslide-API-and-fragments' of https://github.com/rajgoel/reveal.js into dev
isSliding > isAutoSliding
test isAutoSliding, isAutoSliding returns false when no autoSlide value is set #766
simplify how data-autoslide is picked up from fragments #766
add tests for auto-slide events #766