Add's a dedicated Brand model in your shop.
add to your Gemfile:
gem "spree_brands", :git => 'git://github.com/pero-ict-solutions/spree_brands'
Install the gem:
bundle
bundle exec rails g spree_brands:install
Be sure to bundle your dependencies and then create a dummy test app for the specs to run against.
$ bundle
$ bundle exec rake test_app
$ bundle exec rspec spec
Copyright (c) 2012 PeRo ICT Solutions, released under the New BSD License