Вообщем пытался установить gem, по инструкции, все как положено.
Устанавливаю gem
gem install rails -v 4.2.0
gem install spree
rails new my_store
spree install my_store
Все ок
roman@Salomon:~$ spree install my_store
Would you like to install the default gateways? (Recommended) (yes/no) [yes]
Would you like to install the default authentication system? (yes/no) [yes]
Would you like to run the migrations? (yes/no) [yes]
Would you like to load the seed data? (yes/no) [yes]
Would you like to load the sample data? (yes/no) [yes]
gemfile spree
gemfile spree_gateway
gemfile spree_auth_devise
run bundle install from "./my_store"
И ошибка
Bundler could not find compatible versions for gem "jquery-rails":
In Gemfile:
spree (~> 2.4.4) ruby depends on
spree_frontend (= 2.4.4) ruby depends on
jquery-rails (~> 3.1.2) ruby
jquery-rails (4.0.3)
Как я понял. На новую версию ruby on rails Spree не подходит?