App update

app.rb

# Define application-level configuration using a simple DSL.
#
#   class App < Configuration
#     config.key  = "value"
#     config.lazy = lambda { |load| load }
#   end
#
#   App.key          # => "value"
#   App.key?         # => true
#   App.lazy("load") # => "load"
#   App.lazy?(nil)   # => false
#
# Override by Rails environment.
#
#   # config/app/development.rb
#   config.key = "devalue"
#
#   App.key          # => "devalue"
class Configuration
  autoload :OpenStruct, "ostruct"

  class << self
    def [](key)
      config.send key
    end

    def inspect
      config.inspect.sub config.class.name, name
    end

    private

    def config
      @config ||= OpenStruct.new
    end

    def method_missing(method, *args)
      super if (key = method.to_s).end_with?("=")
      boolean = key.chomp!("?")
      value   = self[key]
      value   = value.call(*args) if value.respond_to?(:call)
      boolean ? !!value : value
    end

    def inherited(subclass)
      return unless defined? Rails

      config = "#{Rails.root}/config/#{name.underscore}/#{Rails.env}.rb"
      if File.exist?(config)
        eval File.read(config), binding, __FILE__, __LINE__
      end
    end
  end
end