modify api and change rounding adj

db/migrate/20170626191519_create_shift_sales.rb

@@ -21,7 +21,7 @@ class CreateShiftSales < ActiveRecord::Migration[5.1]
       t.integer :dining_count, :default => 0
       t.integer :takeaway_count, :default => 0
       t.integer :member_count, :default => 0
-      t.integer :total_rounding, :default => 0
+      t.decimal :total_rounding,, :precision => 10, :scale => 2, :null => false, :default => 0.00
       t.integer :total_receipt, :default => 0
       t.decimal :total_void, :default => 0
       t.timestamps

db/migrate/20180406080240_create_order_reservations.rb

@@ -5,6 +5,7 @@ class CreateOrderReservations < ActiveRecord::Migration[5.1]
     	t.string 	   :order_reservation_type, :null => false
     	t.string 	   :customer_id, :null => false
     	t.datetime 	 :requested_time, :null => false
+      t.string     :callback_url, :null => false
     	t.integer :item_count, :null => false, :default => 0
       t.integer :total_customer
     	t.string 	:payment_type