Session03 hw assignment

Mashup using twitter and flickr. Took me a while, but glad I got it working. I even created an html file to display the output!

Sorry about submitting hws 1 and 2 in this pull request. I created this sesson03 branch from my master (which has hw 1 and 2). Next time I create a branch from your UWPCE-PythonCert:master for the next assignment.