add League On Device repository

src/BackendBundle/Repository/LeagueOnDeviceRepository.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: jeremyguiselin
+ * Date: 12/01/2017
+ * Time: 19:00
+ */
+
+namespace BackendBundle\Repository;
+
+
+use Doctrine\ORM\EntityRepository;
+
+class LeagueOnDeviceRepository extends EntityRepository
+{
+
+}
\ No newline at end of file