employee login and authentication with session

db/migrate/20170414110918_create_booking_orders.rb

@@ -0,0 +1,10 @@
+class CreateBookingOrders < ActiveRecord::Migration[5.0]
+  def change
+    create_table :booking_orders do |t|
+      t.references :booking, foreign_key: true
+      t.references :order, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end