Fixed PriceRule propertyRead from the main SDK file in order to facilitate access to the Price Rule API

Author: db306

lib/ShopifySDK.php

@@ -74,6 +74,7 @@
  * @property-read Customer $Customer
  * @property-read CustomerSavedSearch $CustomerSavedSearch
  * @property-read Discount $Discount
+ * @property-read PriceRule $PriceRule
  * @property-read Event $Event
  * @property-read FulfillmentService $FulfillmentService
  * @property-read GiftCard $GiftCard
@@ -107,6 +108,7 @@
  * @method Customer Customer(integer $id = null)
  * @method CustomerSavedSearch CustomerSavedSearch(integer $id = null)
  * @method Discount Discount(integer $id = null)
+ * @method PriceRule PriceRule(integer $id = null)
  * @method Event Event(integer $id = null)
  * @method FulfillmentService FulfillmentService(integer $id = null)
  * @method GiftCard GiftCard(integer $id = null)