Bugfix commit

Author: Dimaskao

README.md

@@ -10,7 +10,7 @@ This library can serialize your php objects into `JSON`, `YAML` and `XML`.
 ### General
 At first include this library classes: 
 ```php
-require_once __DIR__ . 'XXXXX/vendor/autoload.php';
+require_once __DIR__ . '/XXXXX/vendor/autoload.php';
 
 use Serializer/JSON// |\
 use Serializer/XML // |- Choose what you need
@@ -42,7 +42,7 @@ $json->serialize($obj, ["value1", "value3"]);
 If you would add new formats, you should create your own class 
 which extends `AbstractSerializer.php` and implements `SerializerInterface.php`.
 ```php
-require_once __DIR__ . 'vendor/autoload.php';
+require_once __DIR__ . '/vendor/autoload.php';
 use Serializer\AbstractSerializer;
 use Serializer\SerializerInterface;
 
@@ -69,7 +69,7 @@ return json_encode($public_value)
 Let's see how it works using the YAML example.
 ```php
 //Include library
-require_once __DIR__ . 'vendor/autoload.php';
+require_once __DIR__ . '/vendor/autoload.php';
 
 use Serializer\YAML;
 

test/demo.php

@@ -2,7 +2,7 @@
 
 <?php
 
-require_once DIR . '/../vendor/autoload.php';
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Serializer\JSON;