Merge branch 'downloadUnitTestData' into 'master'

CMake/Utilities/imstkExternalDataDownloadTest.cmake

CMake/imstkCopyAndCompileShaders.cmake

CMakeLists.txt

Examples/Audio/Audio.cpp

Examples/Audio/CMakeLists.txt

Examples/BoneDrilling/CMakeLists.txt

Examples/CMakeLists.txt

Examples/CameraController/CMakeLists.txt

Examples/CameraController/CameraController.cpp

Examples/DeformableBody/CMakeLists.txt

Examples/DeformableBody/DeformableBody.cpp

Examples/ExtractSurface/CMakeLists.txt

Examples/GeometryTransforms/CMakeLists.txt

Examples/Graph/CMakeLists.txt

Examples/LaparoscopicToolController/CMakeLists.txt

Examples/MeshIO/CMakeLists.txt

Examples/MshVegaIO/CMakeLists.txt

Examples/ObjectController/CMakeLists.txt

Examples/PBDCloth/CMakeLists.txt

Examples/PBDCollision/CMakeLists.txt