Add Swedish locale.
Update README and LICENSE.
Remove no longer used Versionfile.
Update engine for latest Spree version.
Add manifest assets.
Update test environment.
Use add_routes not draw.
Strong parameters fix by @kenjinino
Spree i18n namespace.
Fixes various issues.

- assign a default taxon if the product is not associated with a
category by @iloveitaly
- fix date if nil
- included_tax_total replace tax_total
- Spree::Config.site_name is deprecated
Fix specs syntax and failures.
Use bin/rails for Rails4 branches.
Uncategorized if no taxon - with i18n support.
Merge pull request #31 from futhr/to-upstream

Updates for spree 2.0.0