abstraction and testing lab solution
Various fixes for new recursion II. Moved all generalization exercises
to second lab, and clarified instructions on sorting page.
Added warning about difficulty of lab.
Merge pull request #234 from peterasujan/gh-pages

Various fixes for new recursion II. Moved all generalization exercises
Improved directions for 'exaggerate' activity.
Merge pull request #235 from peterasujan/gh-pages

Improved directions for 'exaggerate' activity.
Improved directions for subset problem.
Merge pull request #236 from peterasujan/gh-pages

Improved directions for subset problem.
Cleaned up code for alonzo movement. Also, clicking away from nav menu now closes it. Closes #240.
Made alonzo movement code even better.
Forgot to remove a couple of debugging lines.
Put more descriptive titles in concurrency topic file. Fixes #237.
Merge pull request #241 from peterasujan/gh-pages

Cleaned up code for alonzo movement. Also, clicking away from nav menu n...
Fixed the subsets self test
show videos, readings o berkeley course
Merge pull request #245 from xtitter/gh-pages

show videos, readings o berkeley course
Merge pull request #243 from paulirwin12/gh-pages

Fixed the subsets self test
Tweaked comments a bit more for subsets self test.
Merge pull request #246 from peterasujan/gh-pages

Tweaked comments a bit more for subsets self test.
add first two code.org videos