Modify relation models.
Modify fixtures.
Remove story tests.
Modify test_helper.
Implement user controller tests.
Clean up code style.
Skip defore filter for new, create action in UserController
Modify 'should destroy user test'
Modify 'should destroy user' test.
Modify User relations.
Merge branch 'release/v0.0.3'
Change username for test database.
Add travis config.
Add coverals gem.
Add coverals into test_helper
Modify travis config.
Modify travis config.
Added factory_girl, simplecov gems.
Add simplecov into test_helper.
Modify tests. Add factory girl.