Added some bounds checking to the elevator control module in case there
are fewer elevators than the hard coded values allow. It will default to
the elevator at position n - 1 (where n is the number of elevators) if
there aren't enough elevators currently
Merge branch 'master' of https://github.com/ethand320/se350
Committing the unit tests written by Saleem to the master branch. Only
some of them are working as of right now.

In order for my eclipse project to recognize the netbeans jUnit test
layout, the jUnit package declarations have been changed like so:

implTests --> UnitTests.ImplTests

This is because Eclipse sees all folders in the workspace as a package.
There's a small chance this might lead to buggy behavior in NetBeans.