CAUTION: Not ready for porduction, yet.
Set up your success link in your Sofort AG settings as following:
http://your-shop-url.com/orders/-USER_VARIABLE_1-/checkout/directebanking_return?status=-STATUS-&payment_method_id=-USER_VARIABLE_0-&order_id=-USER_VARIABLE_1-
Add spree_sofort_payment to your Gemfile:
gem 'spree_sofort_payment'
Bundle your dependencies and run the installation generator:
bundle
bundle exec rails g spree_sofort_payment:install
Be sure to bundle your dependencies and then create a dummy test app for the specs to run against.
bundle
bundle exec rake test_app
bundle exec rspec spec
When testing your applications integration with this extension you may use it's factories. Simply add this require statement to your spec_helper:
require 'spree_sofort_payment/factories'
Copyright (c) 2013 [name of extension creator], released under the New BSD License