removed the questionable robot image from the quizzes
Merge branch 'gh-pages' of https://github.com/aaaschmitt/bjc-r into gh-pages
Merge branch 'gh-pages' of https://github.com/beautyjoy/bjc-r into gh-pages
Added solution files for lists 2 and recursive reporters 1.  Also fixed pictures in lists 2.
Merge pull request #246 from peterasujan/gh-pages

Tweaked comments a bit more for subsets self test.
add first two code.org videos
style fixes for videos
style tweaks, add fns video
BANISH ALL THE TABS! (in bjc.css)  and fix caption styles...
add repeat video and repeat until
data topic revisions
fixing styling for class=step
more bug costumes
Merge pull request #256 from xtitter/gh-pages

refined data topic a bit, added bug costumes
darn css changes.
more disclaimers about gps coords and euclidean distances
again with the fixing of the discussion on GPS
Merge pull request #257 from xtitter/gh-pages

fixing discussion on gps coords
cs10.b.e
merge in Nate's changes