Added functionality to print_report method to ensure total, number of donations and average are printed in the report.
Added functionality to print_report method to ensure total, number of donations and average are printed in the report.

UWPCE-PythonCert/IntroPython2016,UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016,weidnem/IntroPython2016,weidnem/IntroPython2016,UWPCE-PythonCert/IntroPython2016,Baumelbi/IntroPython2016,Baumelbi/IntroPython2016