Fixed PhysicsWorld::DrawDebugGeometry() not exposed to Lua. Closes #133.

Source/Engine/LuaScript/pkgs/Physics/PhysicsWorld.pkg

@@ -35,6 +35,7 @@ class PhysicsWorld : public Component
     // void SphereCast(PhysicsRaycastResult& result, const Ray& ray, float radius, float maxDistance, unsigned collisionMask = M_MAX_UNSIGNED);
     tolua_outside PhysicsRaycastResult PhysicsWorldSphereCast @ SphereCast(const Ray& ray, float radius, float maxDistance, unsigned collisionMask = M_MAX_UNSIGNED);
 
+    void DrawDebugGeometry(bool depthTest);
     void RemoveCachedGeometry(Model* model);
 
     Vector3 GetGravity() const;