Setup branch for 2-4-stable.
Use new build on Travis.
Update doc to reflect current branch and repo.
Say goodbye to hash rockets.
Use bin for Rails 4
Setup branch for Spree 3.0.0.beta
Move engine for consistency.
Return version as a Gem::Version
Use *_action instead of *_filter
Fixes broken Rakefile.

It was unable to run specs.
Rework spec support.
Add ActiveRecord model translations.

For better pluralization, need grammar check for some languages.
Rework admin layout for master branch.

Moved the Relation Types link from Configuration to Products sub menu
where it belongs.
Remove unused translation keys.
Rename locale key that override one in Spree Core.

The key “name_or_sku” in Spree Core use a very long description; “Name
or SKU (enter at least first 4 characters of product name)” that break
this forms layout so it cannot use same.
Add config support for Hound CI.
Update dev dependencies; RSpec 3.1 etc.
Fixes bad indent, tabs, and newlines.
Minor code refactor.
Fixes specs and update syntax for RSpec 3.1.x