Lab 5:

Revise BankExample project so that:

1) It has a third account named "paul" with initial balance 3000

2) When you carry out transactions through Bank
and the String indicated is not "john", "marsha",
or "paul", print an error message "No such account"

3) Revise BankSimulation to test these new features

Revise WaterMovement project:

1) Add a WaterLevelIndicator class whose role
is to check how much water is left in the tank

2) Revise FaucetAction by creating a single WaterLevelIndicator 
object associated to the same tank used by the faucets
and calling the appropriate method on the object instead of
directly using checking from the tank