determineCommands now public to enable testing
determineCommand return type changed to String to facilitate testing
Added junit test.

determineCommand 'add' modified for testing.
removing files
removing unnecessary files from being tracked.
determineCommand 'add' fixed to properly add Strings with whitespaces.

updated test.
removed 'save' command.

not required as program auto-saves.
determineCommands edited for test to work.

test cases for CE1 completed.