I'm not able use this gem on ruby 2.2.1 and rails 4.2, spree 3.0 stable .
:~/projects/shopping$ bundle install
Resolving dependencies...
Bundler could not find compatible versions for gem "spree":
In Gemfile:
alchemy_spree (>= 0) ruby depends on
spree (< 3.0, >= 2.3) ruby
spree (3.0.0)
gem 'spree', github: 'spree/spree', branch: '3-0-stable'
gem 'spree_gateway', github: 'spree/spree_gateway', branch: '3-0-stable'
gem 'spree_auth_devise', github: 'spree/spree_auth_devise', branch: '3-0-stable'
gem 'alchemy_spree', github: 'magiclabs/alchemy_spree', branch: 'master'
gem "alchemy_cms", github: "magiclabs/alchemy_cms", branch: "master"
gem "alchemy-devise", github: "magiclabs/alchemy-devise", branch: "master"