* remove rst directives from the plain text assignment
update lab cgi index page to point to other samples
 * update the outline, fixing due dates and linking week 3 and week 4 assignments
* update outline, fixing links to cgi example scripts
 * complete the week 4 presentation
 * set up assignment for week 4
 * add README to clarify how to run the examples before we get to class.
add two additional example cgi scripts for fun and profit
 * add lab source scripts
add wsgi test file for labs and local testing