Adding contact nodes on all obstacles
Merge branch 'master' into vincentBranch
Adding Tuan's update: Coins
test commit
Merge branch 'master' into vincentBranch
Small pull from upstream master
Fixing scoreNode not passable issue. Set collisions to be true for all but coin and scoreNode
Changed benchScoreContact to be a SKNode() like before.
Merge pull request #27 from vlee90/vincentBranch

Fixed collision with scoreNode/coin issue