fix public url for tests on travis

Author: endel

tests/index.html

@@ -17,7 +17,7 @@
       success: function(data) {
         window.appData = data;
         window.client = new Hook.Client({
-          url: "http://hook.dev/public/index.php/",
+          url: "http://hook.dev/index.php/",
           app_id: data.keys[1].app_id,
           key: data.keys[1].key
         });