Renamed PaymentMethod.java to Receipt.java and moved it to the objects
package (previously was in business package).

Modified Payment.java to exclude price since it is already contained in
Flight.java.

Modified Receipt.java to print out all required info (Flight info,
Passenger/Customer info, Payment info) in the toString method.

Modified Bookings.java to add some functionality for the book flight
button which with additional coding will take you to a receipt screen.
Right now it just creates a Receipt object with all of the user's info
input into the various text boxes.

Additional notes: 

The seat tests class needs to be modified to get rid of the errors
currently present.

Also, there is some sort of linker error to the database that is causing
no flights to be found no matter what you put into  your flight search
text boxes.