Merge pull request #3 from pronix/master

small changes
Fixes unnecessary dependencies and cleanup.

- Assets now use correct version for spree 2.0.3
- No point to declare encoding in files if no special chr exists.
- Removed heavy javascript runners we don't need it here
- Cleanup gitignore and specs.
Changed license to markdown and updated readme.
Merge branch 'master' of github.com:futhr/spree_klarna_invoice

Conflicts:
	app/controllers/spree/checkout_controller_decorator.rb
	app/models/order_decorator.rb