Adding spree gem
Changing spree_core version dependency to 2.2.0.beta
Adding zipcode_range model and specs
Adding Zone decorator and specs
Adding routes to zipcode_range
Adding zipcode_ranges_controller and decorating zones_controller
Adding zipcode_range crud views
Adding link to zipcode ranges crud on general setting's side menu
Adding partials and overrides to zone's form to be able to choose zip code ranges
Adding en and pt-BR translation files
Adding javascript for selecting zones based on zipcode range, state or country