REFAC: Camera defaults looking down z

Source/SceneEntities/Camera/imstkCamera.h

@@ -258,8 +258,8 @@ protected:
 
 protected:
     // Lookat camera parameters
-    Vec3d m_position   = Vec3d(0.0, 2.0, 5.0); ///> camera position
-    Vec3d m_focalPoint = Vec3d::Zero();        ///> camera focal point
+    Vec3d m_position   = Vec3d(0.0, 0.0, 0.0); ///> camera position
+    Vec3d m_focalPoint = -Vec3d::UnitZ();      ///> camera focal point
     Vec3d m_viewUp     = Vec3d::UnitY();       ///> camera up vector
 };
 }