some comments are added

comments for rrquecpp and storecomplete() are still needed
add findstore() in shopper class
Merge branch 'master' of https://github.com/Scoterster86/CS-Lab5

Conflicts:
	newlab5/lab5/lab5.h
	newlab5/lab5/main.cpp
	newlab5/lab5/rrqueue.cpp
	newlab5/lab5/shopper.cpp
	newlab5/lab5/store.cpp
update