Added acceptance tests for brother registration.
Added brother registration.
Added Show action for brothers_controller.
Added Show action to brothers controller.
Added test to validate that email address exists.
Fixed test cases.
Added validation for presence of first_name, last_name, and email on Brother model.
Removed wip flag.
Refactoring cucumber scenarios for brother registrations.
Added validation if First Name is too long.
Added validation when brother.last_name is too long.
Added validation for brother.email to be the proper format.