avatax-configs.diff

diff --git a/db/migrate/20151130195450_add_spree_avatax_configs.rb b/db/migrate/20151130195450_add_spree_avatax_configs.rb
new file mode 100644
index 0000000..3a07ac4
--- /dev/null
+++ b/db/migrate/20151130195450_add_spree_avatax_configs.rb
@@ -0,0 +1,8 @@
+class AddSpreeAvataxConfigs < ActiveRecord::Migration
+  def change
+    create_table 'spree_avatax_configs' do |t|
+      t.boolean 'enabled', null: false
+      t.integer 'timeout', null: false
+    end
+  end
+end
diff --git a/lib/spree_avatax/config.rb b/lib/spree_avatax/config.rb
index 9962103..fc06191 100644
--- a/lib/spree_avatax/config.rb
+++ b/lib/spree_avatax/config.rb
@@ -1,5 +1,7 @@
 module SpreeAvatax
-  class Config
+  class Config < Spree::Base
+    DEFAULT_TIMEOUT_SECONDS = 20
+
     class << self
       attr_accessor :username
       attr_accessor :password
@@ -11,6 +13,14 @@ module SpreeAvatax
       attr_accessor :sales_invoice_generate_error_handler
       attr_accessor :sales_invoice_commit_error_handler
       attr_accessor :sales_invoice_cancel_error_handler
+
+      def timeout
+        (config = last) ? config.timeout : DEFAULT_TIMEOUT_SECONDS
+      end
+
+      def enabled
+        (config = last) ? config.enabled : true
+      end
     end
   end
 end