Updated gitignore.
Add standard BSD license file.
Updated engine to Spree 2 style.

- Master branch using now Spree 2.1.0.beta
- Add test group to gemfile for Travis.
- Updated Versionfile with new braches.
- Bump version to 3.2.1.beta.
Updated spec_helper.

- Fuubar is nice :)
- SimpleCov and Coveralls.
- General new spec helper stuff.
Fixed pl and de locales.

- Locale for pl had unused translation key.
- Locale for de was missing key.
Add locale spec.
Fix Spree locale namespace.
Cleanup migrations.
Some general code formatting.
Cleanup product spec.
Updated Travis and README.