Added missing file

Validator/LocaleAllowed.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * This file is part of the LuneticsLocaleBundle package.
+ *
+ * <https://github.com/lunetics/LocaleBundle/>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that is distributed with this source code.
+ */
+
+namespace Lunetics\LocaleBundle\Validator;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * LocaleAllowed Constraint
+ *
+ * @Annotation
+ */
+class LocaleAllowed extends Constraint
+{
+    /**
+     * @var string
+     */
+    public $message = 'The locale "%string%" is not allowed by application configuration.';
+
+    /**
+     * {@inheritDoc}
+     */
+    public function validatedBy()
+    {
+        return 'lunetics_locale.validator.locale_allowed';
+    }
+}