added elasticsearch talk
Added urls for github and slides
fixed empty talks bug
Merge pull request #7 from demoive/patch-2

Added urls for github and slides
update
added slides, code later
Merge pull request #8 from toniher/master

Offline storage presentation added
added es resources
Merge branch 'master' of github.com:barcelona-js/barcelonajs.org
added specials
added missing dependencies
Added videogular talk.
Merge pull request #12 from 2fdevs/master

Added videogular talk.
Merge branch 'master' of git://github.com/barcelona-js/barcelonajs.org
Style: fit september in the date box
A Added a talk to 'teach' Promises