Mongoid w/ Rails, attr_accessible --> "No method found"

• Generated Rails App w/out Active Record
• Added appropriate gems for Mongoid (Mongodb & Mongoid)
• Generated the mongoid.yml file in config/ with rails support
• Created a friend model and user controller with typical CRUD routes

Everything works except when I try to do a mass assignment I get: "undefined method `attr_accesible' for Friend:Class"

Model, friend.rb:

    class Friend
      include Mongoid::Document
      field :first_name, :type => String
      field :last_name, :type => String
      field :adjective, :type => String
      attr_accessible :first_name, :last_name, :adjective
    end

development:
  sessions:
    default:
      database: first_development
        hosts:
          - localhost:27017
        options:
        options:
test:
  sessions:
    default:
      database: first_test
      hosts:
        - localhost:27017
      options:
        consistency: :strong
        max_retries: 1
        retry_interval: 0

Thoughts?