Add external tools for CS, add travis config file

RoboFile.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * This is project's console commands configuration for Robo task runner.
+ *
+ * @see http://robo.li/
+ */
+
+require_once 'vendor/autoload.php';
+
+class RoboFile extends Glpi\Tools\RoboFile
+{
+    //Own plugin's robo stuff
+}