Made more flexible the SRC and HDR lists in cmake, now one can add easily custom source files by simply populating the cmakelists.txt file  as follow:

set(MyProj_SRC ${MyProj_SRC}  MyProjGui.cpp MyProjImpl.cpp)
set(MyProj_HDR ${MyProj_HDR}  MyProjGui.h MyProjImpl.h)

create_project(MyProj)