Add a harmonic oscillator lab to CSUOhio differential equations directory.  Lab requires Flash and essay style answers.
allign harmonic oscillator lab problems with taxonomy
Add Norman window optimization problem to CSUOhio collection.  Uses Flash applet.
intro diff eq problems for Classification of Differential Equations section of intro chapter added to CSUOhio library
Merge pull request #21 from bmargolius/master

More Flash applet problems for CSUOhio.  Norman window optimization problem and diff eq harmonic oscillator lab.