clean up
updates: Gemfiles to spree 2.3 and rails 4
updates: locales and lib folder to match spree 2.3 convensions
updates: models, to ensure they work with spree 2.3
updates: controllers, to ensure they work with spree 2.3
updates: spec folder, installs rspec 3
updates: spec, ensure they all pass with spree 2.3 rand rspec 3 syntax
updates: migrations, adds new preferences migration for spree 2.3
adds: new missing bin folder for rails4