Initial work on moving payment_gateway into gem extension.

payment_gateway/lib/payment_gateway.rb

@@ -1 +1,28 @@
-#TDOD - May want to add code directly to this lib file later
+require 'active_merchant'
+
+# Mixin the payment_gateway method into the base controller so it can be accessed by the checkout process, etc.
+Creditcard.class_eval do
+  # add gateway methods to the creditcard so we can authorize, capture, etc.
+  include Spree::PaymentGateway
+end
+
+silence_warnings { require 'active_merchant/billing/authorize_net_cim' }
+
+#register all payment methods
+[
+  Gateway::Bogus,
+  Gateway::AuthorizeNet,
+  Gateway::AuthorizeNetCim,
+  Gateway::Eway,
+  Gateway::Linkpoint,
+  Gateway::PayPal,
+  Gateway::SagePay,
+  Gateway::Beanstream,
+  PaymentMethod::Check
+].each{|gw|
+  begin
+    gw.register
+  rescue Exception => e
+    $stderr.puts "Error registering gateway #{gw}: #{e}"
+  end
+}

payment_gateway/lib/payment_gateway/engine.rb

@@ -0,0 +1,6 @@
+require "spree_core"
+
+module SpreePaymentGateway
+  class Engine < Rails::Engine
+  end
+end