Added preferences for click amount and valid days on digital links. Tests for authorization are now running

lib/spree/spree_digital_configuration.rb

@@ -0,0 +1,6 @@
+module Spree
+  class SpreeDigitalConfiguration < Preferences::Configuration
+    preference :authorized_clicks,  :integer, :default => 3
+    preference :authorized_days,    :integer, :default => 2
+  end
+end

lib/spree_digital/engine.rb

@@ -8,7 +8,11 @@ module SpreeDigital
     config.generators do |g|
       g.test_framework :rspec
     end
-
+    
+    initializer "spree.spree_digital.preferences", :after => "spree.environment" do |app|
+      Spree::DigitalConfiguration = Spree::SpreeDigitalConfiguration.new
+    end
+   
     def self.activate
       Dir.glob(File.join(File.dirname(__FILE__), "../../app/**/*_decorator*.rb")) do |c|
         Rails.application.config.cache_classes ? require(c) : load(c)