Adding BulletShape.
Adding the Physics Bounding Box to the zombies, we still need to modify once we get the issue 217 resolved (graphics).
Having problems with the orientation of the node, the zombies were exported using the Y axis and should be Z axis as the Up Vector, all the Ragdoll logic was created for those zombies, now, the bones have different orientations and we will not rebuilt all the ragdolls for now, instead we will try to rotate the zombie node everytime we move or rotate the zombie, ugly but is the only way without too much changes.
Using 2 sceneNodes per Zombie now to avoid the UpVector issue