Ignored .knuth-out and vim garbage.
Merge pull request #4 from mwhittaker/gitignore

Update .gitignore
Removed garbage files.
Renamed jacksons.PNG for consistency.

I also chmod'ed it to make it non-executable.
Moved images to img directory
Merge pull request #5 from mwhittaker/CS-3420-cleanup

Cs 3420 Cleanup
Merge remote-tracking branch 'upstream/master'