Add created_at and updated_at to ResponseMap

db/migrate/20140321025833_update_response_maps.rb

@@ -0,0 +1,11 @@
+class UpdateResponseMaps < ActiveRecord::Migration
+  def self.up
+    add_column :response_maps, :created_at, :datetime
+    add_column :response_maps, :updated_at, :datetime
+  end
+
+  def self.down
+    remove_column :courses, :created_at
+    remove_column :courses, :updated_at
+  end
+end