updates: Gemfiles, adds rails4 , ruby 2, spree 2.3
adds: new lib files and generators for spree 2.3
updates: config locales and routes
updates: assets folder, changes strucutre for spree 2.3
adds: new spec_helper and rails_helper for rspec3 syntax
updates: all specs, to make sure they pass with rspec 3 and rails 4
updates: controllers, ensures they work with rails 4 and spree 2.3
updates: models, ensures they work with spree 2.3 and rails 4
updates: overrides and helpers to esnrue they work with spree 2.3 and rails 4
updates: views, mainly styling
updates: README file
cleanup the rest