Redesign domain of example

[terrymanu]

The current domain, Order, OrderItem and Sportsman, Country of example have no relationship each other.

Domain Order and OrderItem is example for binding-table, domain Sportsman and Country is example for broadcast-table.

We can redesign domain of example to make them more meaningful.

• Remove Sportsman & Country
• Add Address
• Make relationship for Order and Address
• Use Order and Address to show how to use broadcast-table