Renaming of the src directory.

CMakeLists.txt

libs/googletest

qpong/CMakeLists.txt

qpong/Common.hpp

qpong/ImageBuffer.cpp

qpong/ImageBuffer.hpp

qpong/Particle.cpp

qpong/Particle.hpp

qpong/ParticleImage.cpp

qpong/ParticleImage.hpp

qpong/Profiler.cpp

qpong/Profiler.hpp

qpong/QDrawingArea.cpp

qpong/QDrawingArea.hpp

qpong/QPlayer.cpp

qpong/QPlayer.hpp

qpong/QWindow.cpp

qpong/QWindow.hpp

qpong/main.cpp