Merge pull request #31 from SpyMaster356/master

update
Merge pull request #36 from SpyMaster356/master

update
updated PurchaceJFrame to use PosSystem
Merge branch 'GUI' of https://github.com/SpyMaster356/Assignment-2 into GUI

Conflicts:
	backEnd/PosSystem.java
PosSystem was corrupted, fixed
fixed?
Update PosSystem.java
Merge branch 'GUI' of https://github.com/SpyMaster356/Assignment-2 into GUI
recognized MainJFrame
beginning work on RecieptsJFrame
continuing work on Receipts
all windows built
Merge pull request #38 from SpyMaster356/GUI

Gui