test code for hw2
added comments.
added send-post-request
added demo of app.py, ref-server
Merge branch 'hw5-wsgi' of https://github.com/ctb/cse491-serverz into hw5

Conflicts:
	test_server.py
app.py is returning content of hw4
test GET functionality of app
TODO: test POST, maybe FAKE method
add env.txt, test_app.py and environ.html
Get server.py to work with WSGI app
More test in test_server against evil input
Update start_response with exec_info
Merge pull request #7 from phammin1/hw5

Hw5