CustomerDAO Assignment
                
                The Customer Design Summary shows:
                
          Action classes
          --------------------
          CustomerDAO
            List<Customer> findCustomersByName(String firstName, String lastName)
            List<Customer> findAllCustomers()
            Customer findCustomerById(int id)
            void addCustomer(Customer customer)
            void updateCustomer(Customer customer)
            void deleteCustomer(Customer customer)
            void deleteCustomer(int id)
            
          I have provided the 
          
          List<Customer> findAllCustomers()
          Customer findCustomerById(int id)
          
          your assignment is to write/document/test
          
          List<Customer> findCustomersByName(String firstName, String lastName)
          
          the SQL you will need is:
          
            Select * from Customer where FIRST_NAME = ? AND LAST_NAME = ?
  


        you need to test:
        
        unauthorized access
        a valid first/last name
        an invalid first/last name
        ???
        
        the method signature returns a List<Customer>
        so... are there any duplicates?
        
        remeber the test data is yours to control, you can edit the test data
        anyway you want