Fix README when Run the Rspec
Created by: azusa
gitlab:test task set RAILS_ENV to test in spinach, but spec task dosen't do it. So, when executing "rake spec", we should set RAILS_ENV to test.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: azusa
gitlab:test task set RAILS_ENV to test in spinach, but spec task dosen't do it. So, when executing "rake spec", we should set RAILS_ENV to test.