数据库 19wu 运行 rake setup 出错！
tekiMacBook-Air:19wu-master llx$ rake setup
Copy config file... using pg dabase adapter. copying :/Users/Downloads/19wu-master/config/database.yml.example.pg => /Users/Downloads/19wu-master/config/database.yml copying :/Users/Downloads/19wu-master/config/settings.yml.example => /Users/Downloads/19wu-master/config/settings.yml
Create database and table... FATAL: role "postgres" does not exist /Users/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1216:in `initialize'
额，求大神帮忙看看。。
