update labeling points problem; setup for labeling critical points, but applet may be used for other purposes.  In CSUOhio collection.  Problem written by Dan Gries.
Add applet to have students sketch autonomous differential equations with three problems (with and without instructor graded part, so six problems total).  Part of CSUOhio collection for differential equations.
Merge pull request #23 from bmargolius/master

Updates and additions to CSUOhio directory; revised custompointlabeling; new autonomous diffeq sketch problems