Merge branch 'minorRefacRendering' into 'master'

Examples/Sandbox/main.cpp

Source/Rendering/VTKRenderer/imstkVTKRenderer.cpp

Source/Rendering/VTKRenderer/imstkVTKRenderer.h

Source/Rendering/VulkanRenderer/imstkVulkanRenderer.cpp

Source/Rendering/VulkanRenderer/imstkVulkanRenderer.h

Source/Rendering/imstkRenderer.cpp

Source/Rendering/imstkRenderer.h

...SimulationManager/VTKRenderer/imstkVTKInteractorStyle.cpp

Source/SimulationManager/VTKRenderer/imstkVTKViewer.cpp

Source/SimulationManager/VTKRenderer/imstkVTKViewer.h

...tionManager/VulkanRenderer/imstkVulkanInteractorStyle.cpp

Source/SimulationManager/VulkanRenderer/imstkVulkanViewer.h

Source/SimulationManager/imstkOpenVRCommand.cpp

Source/SimulationManager/imstkSimulationManager.cpp

Source/SimulationManager/imstkSimulationManager.h

Source/SimulationManager/imstkViewer.h