fixed minor issues

src/AbstractQueryBuilder.php

@@ -42,7 +42,7 @@ public function build(Query $query)
 
     public function createRequest($query)
     {
-        return new Request($this, $query);
+        return new $this->db->requestClass($this, $query);
     }
 
     /**

src/curl/Response.php

@@ -13,7 +13,7 @@
 use hiqdev\hiart\AbstractResponse;
 
 /**
- * Guzzle response implementation.
+ * cURL response implementation.
  *
  * @author Andrii Vasyliev <[email protected]>
  */

src/rest/QueryBuilder.php

@@ -10,7 +10,9 @@
 
 namespace hiqdev\hiart\rest;
 
-class QueryBuilder extends AbstractQueryBuilder
+use hiqdev\hiart\Query;
+
+class QueryBuilder extends \hiqdev\hiart\AbstractQueryBuilder
 {
     /**
      * This function is for you to provide your authentication.