rotating coins
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Merge branch 'master' of https://github.com/AndreyNikolaev/CoffeeMachineIOS-2nd-edition

Conflicts:

CoffeeMachine.xcodeproj/project.xcworkspace/xcuserdata/dancho.xcuserdata
d/UserInterfaceState.xcuserstate
	CoffeeMachine/PaymentFlow.h
	CoffeeMachine/PaymentFlow.m
io