Merge branch 'hotfix/gemspec'
trying a different configurations on factories.rb
another configuration on factories.rb
corrected small bug with rspec of create method of product
Merge branch 'develop', remote-tracking branch 'origin' into feature/cp-promotion
DiscountTypes CRUD removed; images created on product with populate; DiscountType are created by default in seed
implemented promotions to products; default DiscountTypes created on seed.rb