updating master with homework 3
Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroToPython
Adding Hw4
Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroToPython
Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroToPython
Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroToPython
Adding Homework 5
Merge pull request #47 from voite1/master

Homework 4