Adding test case, adding output
Merge pull request #1 from bcipolli/bcipolli

Adding test case, adding output
Fixed off-by-one errors, numHiddenUnit issue
Added a graph function; added 3 more test cases.
Add hidden unit locations to connection matrix plot
Refactoring tests to call into a common control function.
Test 1: re-centering hidden unit.  Test 4: one unit was off the image