Added column pos sell for check when is selled by the pos system

Author: enriqueaf

app/controllers/spree/admin/pos_controller.rb

@@ -51,6 +51,7 @@ def print
       payment.capture!
     end
     @order.state = "complete"
+    @order.pos_sell = true
     @order.completed_at = Time.now
     @order.create_tax_charge!
     @order.finalize!

db/migrate/20130710122945_add_pos_sell_column_to_spree_orders.rb

@@ -0,0 +1,5 @@
+class AddPosSellColumnToSpreeOrders < ActiveRecord::Migration
+  def change
+    add_column :spree_orders, :pos_sell, :boolean, default: false
+  end
+end