Revision control
++ QT += widgets scxml
++
++ SOURCES = trafficlight.cpp
++ HEADERS = trafficlight.h
++
++ SOURCES += trafficlight-widgets-dynamic.cpp
++
++ # install
++ target.path = $$[QT_INSTALL_EXAMPLES]/scxml/trafficlight-widgets-dynamic
++ INSTALLS += target
++
++ RESOURCES += \
++ trafficlight-widgets-dynamic.qrc