Updated gitignore.
Add license file and updated readme.

Small typo improvments and make it point to correct license file.
Add Swedish locale.
Engine updates.

- Assets group with sass and coffee to avoid tilt autoloading warnings.
- Test group so it play well with Travis.
- Updated Reakefile to avoid Thor from complaining.
- Using Spree 2.1.0.beta
- Updated gemspec summary to more reflect that its a Spree module.
- Fuubar is nice for spec runs :)
- Add simplecov and i18n-spec.
- Bump version to 2.1.0.beta
- Moved coveralls and simplecov to run only with env variable.
Add locale spec.
Some code cleanup and ruby 1.9 hash syntax.