Merge pull request #17 from ovicin/master

Add hammer class
Merge pull request #18 from ovicin/master

ball position added as parameter in the setup method
load 3D model in Lever, include AssimpModelLoader library in xcode project, add light in manager
Merge pull request #22 from kubamarkiewicz/master

load 3D model
Merge pull request #7 from ChinosInternationalCC/master

merge last updates from chino repo