added session06
added solution to html render assignment.
Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroToPython
some cleaning up
Merge pull request #73 from jerrytozhang/master

adding Lab-lambda-and-keyword-argument-magic in session06
Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroToPython