testing: More restructuring for the Nose source * Split the general-purpose testing discussion into the testing/ directory, keeping only nose stuff in testing/nose. * Pull example discussions into example-specific READMEs. * Condense testing/nose/instructor.md, and add links to upstream docs.
testing/nose: Move media into the media/ subdirectory Also: * Use unabbreviated file names for clarity. * Link to the images using relative links for flexibility (this page may be rendered at locations besides https://github.com/thehackerwithin/UofCSCBC2012 ;).
testing/nose: Move existing Nose material to $SUBJECT/$TOOL