Displays about information in a popup dialog.
        
        :param      info    | <str>
                    parent  | <QWidget>
                    logo    | <QPixmap> || <str>

def about( info, parent = None, logo = '' ):
        """
        Displays about information in a popup dialog.
        
        :param      info    | <str>
                    parent  | <QWidget>
                    logo    | <QPixmap> || <str>
        """
        
        dlg = XAboutDialog(parent)
        dlg.setLogo(logo)
        dlg.setInfo(info)
        
        dlg.exec_()