menu -> submenu backend

front-api/db/migrate/20150324044314_create_menu_sub_items.rb

@@ -0,0 +1,10 @@
+class CreateMenuSubItems < ActiveRecord::Migration
+  def change
+      create_table :menu_sub_items do |t|
+          t.string :title
+          t.string :url
+          t.integer :ordinal
+          t.integer :menu_item_id
+      end
+  end
+end