#####1 ######setting up
gem install rails --no-rdoc --no-ri --pre
rails new chatroom -d postgresql -T
cd chatroom
generate
rails g model user name:string email:string password_digest:string
rails g model room name:string
rails g model message user:references room:references content
bundle exec rails db:migrate #still use rake db:migrate
rails s
######Navigating db/seeds.rb
rooms = Room.create([{name: "one"},{name:"two"}])
then
rake db:seed