Add NOMAD License to various files.

NOMADVRLib/CompileGLShader.cpp

NOMADVRLib/CompileGLShader.h

NOMADVRLib/ConfigFile.cpp

NOMADVRLib/ConfigFile.h

NOMADVRLib/Grid.cpp

NOMADVRLib/Grid.h

NOMADVRLib/IsoShaders.cpp

NOMADVRLib/IsoShaders.h

NOMADVRLib/IsosurfacesGL.cpp

NOMADVRLib/IsosurfacesGL.h

NOMADVRLib/MyGL.h

NOMADVRLib/TessShaders.cpp

NOMADVRLib/TessShaders.h

NOMADVRLib/UnitCellShaders.cpp

NOMADVRLib/UnitCellShaders.h

NOMADVRLib/atoms.cpp

NOMADVRLib/atoms.hpp

NOMADVRLib/atomsGL.cpp

NOMADVRLib/atomsGL.h

NOMADVRLib/eprintf.h