gem install rails -v 5.0.0.beta3
rails _5.0.0.beta3_ new dummy_slack --skip-spring
rails generate controller rooms show
rails g model message content:text
rails db:migrate
rails g channel room speak
rails g job MessageBroadcast
gem install rails -v 5.0.0.beta3
rails _5.0.0.beta3_ new dummy_slack --skip-spring
rails generate controller rooms show
rails g model message content:text
rails db:migrate
rails g channel room speak
rails g job MessageBroadcast