Added button, made slight changes to layout in add carriage area
Button functionality added, carriages created and stored.
Trying to change jlist
another commit
finally working
Accept lower or upper case for creating locomotive and freight car types
carriage adding with user input management
fixed nullpointerreference bug, removed some other debugging
Merged all changes
Merge branch 'master' of ssh://git@github.com/rablindaniel/BandDRepo.git

Conflicts:
	asgn2/src/asgn2GUI/MainFrame.java