added no such row found exception

src/ChrisAndChris/Common/RowMapperBundle/Exceptions/Database/NoSuchRowFoundException.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace ChrisAndChris\Common\RowMapperBundle\Exceptions\Database;
+
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+/**
+ * Indicates that there was no matching row found
+ *
+ * LEGACY: Does extend NotFoundHttpException - to be removed/changed in >=v2.2
+ *
+ * @name NoSuchRowFoundException
+ * @version   1.0.0
+ * @since     1.0.0
+ * @package   RowMapperBundle
+ * @author    ChrisAndChris
+ * @link      https://github.com/chrisandchris
+ */
+class NoSuchRowFoundException extends NotFoundHttpException
+{
+
+}