Commited version 2 of collections-workshop.
Modified workshop document.
Added Day 1 Presentation (Tuples, List, Set).
Fixed minor bug from the workshop project.
Merge branch 'master' of https://github.com/ZeroToHero-2014/Java into Dumitru-Cristian-George
Added Day 2 workshop
Merge branch 'master' of https://github.com/ZeroToHero-2014/Java into Dumitru-Cristian-George
Add workshop2 collections!