```ruby
ENV["RAILS_ENV"] ||= 'test'

require 'rspec'
require 'nikkou'

RSpec.configure do |config|
  config.color_enabled = true
  config.formatter = 'documentation'
end```

Remove color_enabled (unsupported in RSpec 3), improve RSpec's config
user
```ruby
ENV["RAILS_ENV"] ||= 'test'

require 'rspec'
require 'nikkou'

RSpec.configure do |config|
  config.order = 'random'
end```
assistant