Merge pull request #24 from vlee90/vincentBranch

Adding ability to jump and crouch on obstacles
Added soundbites for brad and tacos
Merged from master
Added tacos and Brad soundbites
Merge pull request #25 from tnahvu/master

Tacos and Soundbites
Adding contact nodes on all obstacles
Merge branch 'master' into vincentBranch
Adding Tuan's update: Coins