class is for a widget manufacturing plant. The class has one instance variable,
widgetsPerHours, which holds how many widgets can be produced in one hour.
Create a constructor with one argument for widgetsPerHour. Also create a
getter for the instance variable (no setter is needed). The class also needs a method that calculates how many days it will take to produce the number of widgets that is
passed into the method. The plant operates two shifts of eight hours each per day.
