update README
warning fixed
Split toolSet & toolOptionDockWidget, they are 2 independent class now.
update README
update README
in mousePressed() - extract ScribbleArea::PENCIL
in mousePressed() - extract ScribbleArea::ERASER & PEN works
in mousePressed, extract BUCKET & COLOURING
remove unused branched code
in mousePressed(), extract POLYLINE's code
in mousePressed(), extract SELECT's code
in mousePressed(), extract EDIT's code
in mousePressed(), extract MOVE's code