ensure that you have rails 4.2 like envioroment
git clone git://github.com/RailsApps/rails-stripe-membership-saas.git
cd rails-stripe-membership-saas
bundle
rake db:migrate
open Gemfile and add gem 'figaro'
bundle
rake db:migrate
vim config/application.yml
add
STRIPE_API_KEY: kkkkkkkkkkkkkkkkk
STRIPE_PUBLISHABLE_KEY: ffffffffffffffff
rake db:seed
rails s