added getter for objectName to CRM_Civirules_Trigger_Post

CRM/Civirules/Trigger/Post.php

@@ -44,6 +44,15 @@ class CRM_Civirules_Trigger_Post extends CRM_Civirules_Trigger {
     return $daoClassName;
   }
 
+  /**
+   * Getter for object name
+   *
+   * @return mixed
+   */
+  public function getObjectName() {
+    return $this->objectName;
+  }
+
   /**
    * Method post
    *