Revision control
++ QT += qml quick
++
++ CONFIG += qmltypes
++ QML_IMPORT_NAME = Charts
++ QML_IMPORT_MAJOR_VERSION = 1
++
++ HEADERS += piechart.h
++ SOURCES += piechart.cpp \
++ main.cpp
++
++ RESOURCES += chapter2-methods.qrc
++
++ DESTPATH = $$[QT_INSTALL_EXAMPLES]/qml/tutorials/extending-qml/chapter2-methods
++ target.path = $$DESTPATH
++ INSTALLS += target