Just changed the target to 8.0 for the project. It was already set to 8.0 for the target, but that caused XCode to provide 8.0 and 7.x simulators. Since it wouldn't run on 7.x simulators this becomes a little annoying.
Merge pull request #40 from jocelynlih/paul

Just a few tiny changes
Merge branch 'master' of https://github.com/jocelynlih/SwiftGameBook into paul
Added level assets and created a 2.sks - you can access this by clicking the second button