add testing dependencies. create promotion model and write tests
pass all promotion model tests
create show model
write and pass show model tests
refactor tests to use shoulda matchers
write relations tests for show/promotion models
pass relations tests for promo/show models
add milestones to shows model
write validation tests for match model
pass validation tests for match model
pass relations tests for show/match models
write validation and relations tests for wrestler model
pass relations tests for wrestler/show model
fix merge conflicts