Updates for namespace change.

lib/recently_viewed_configuration.rb

@@ -1,3 +1,3 @@
-class RecentlyViewedConfiguration < Configuration
+class RecentlyViewedConfiguration < Spree::Configuration
   preference :recently_viewed_products_max_count, :integer, :default => 5
 end

lib/spree/recently_viewed/config.rb

@@ -13,7 +13,7 @@ class Config
 
       class << self
         def instance
-          return nil unless ActiveRecord::Base.connection.tables.include?('configurations')
+          return nil unless ActiveRecord::Base.connection.tables.include?('spree_configurations')
           RecentlyViewedConfiguration.find_or_create_by_name("Default recently_viewed configuration")
         end
       end