ENH: Material fixes

Examples/CreateEnclosingMesh/CreateEnclosingMesh.cpp

Examples/PBD/PBDDeformableObject/PBD3DDeformableObject.cpp

Examples/SPH-FEM-PBD/sphFemPbdExample.cpp

Examples/SPH-Obj-SDF/SPH-Obj-SDFInteractionExample.cpp

Examples/Vessel/vesselExample.cpp

Source/Geometry/Mesh/imstkPointSet.cpp

Source/Geometry/Mesh/imstkPointSet.h

Source/Geometry/Mesh/imstkSurfaceMesh.cpp

Source/MeshIO/imstkAssimpMeshIO.cpp

Source/Rendering/Materials/imstkRenderMaterial.cpp

Source/Rendering/Materials/imstkRenderMaterial.h

...enderer/RenderDelegate/imstkVTKPolyDataRenderDelegate.cpp

...erer/RenderDelegate/imstkVTKSurfaceMeshRenderDelegate.cpp

...nderer/RenderDelegate/imstkVTKSurfaceMeshRenderDelegate.h

.../RenderDelegate/imstkVTKTetrahedralMeshRenderDelegate.cpp

...er/RenderDelegate/imstkVTKTetrahedralMeshRenderDelegate.h

Source/Rendering/VTKRenderer/imstkVTKRenderer.cpp

Source/Scene/imstkScene.h

Source/SceneEntities/Camera/imstkCamera.h

Source/SceneEntities/Objects/imstkDynamicObject.cpp