Updated and refactored Rails 3 Gem of the old spree-reviews plugin from Paul Callaghan.

1. Add into your Gemfile:

gem 'spree-reviews', :git => 'git:https://github.com/tvdeyen/spree-reviews.git'

2. Run the installation rake task:

bundle exec rake spree_reviews:install

3. And run the migration:

bundle exec rake db:migrate