Again adding nelexa's zip library

SafeBoxEncryptor/vendor/nelexa/zip/src/Exception/RuntimeException.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace PhpZip\Exception;
+
+/**
+ * Runtime exception.
+ * Exception thrown if an error which can only be found on runtime occurs.
+ *
+ * @author Ne-Lexa alexey@nelexa.ru
+ * @license MIT
+ */
+class RuntimeException extends \RuntimeException
+{
+}