Document how to override property values from the command line
Document how to override property values from the command line

Change-Id: Icaef6daa3b98cf0a76e78341d43f797230fe8701
Reviewed-by: Stephan Gatzka <66ff42ccf1d25c710b65d514a59085f98c57bd96@gmail.com>
Reviewed-by: Joerg Bornemann <47777b9406dbddd02a3fdca8341789a013805a11@qt.io>

qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qtproject/qt-labs-qbs