Bump SDK version to 5.6.0

Author: SammyK

README.md

@@ -1,8 +1,8 @@
 # Facebook SDK for PHP (v5)
 
-[![Build Status](https://img.shields.io/travis/facebook/php-graph-sdk/5.5.svg)](https://travis-ci.org/facebook/php-graph-sdk)
-[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/facebook/facebook-php-sdk-v4/badges/quality-score.png?b=5.5)](https://scrutinizer-ci.com/g/facebook/facebook-php-sdk-v4/?branch=5.5)
-[![Latest Stable Version](http://img.shields.io/badge/Latest%20Stable-5.5.0-blue.svg)](https://packagist.org/packages/facebook/graph-sdk)
+[![Build Status](https://img.shields.io/travis/facebook/php-graph-sdk/5.6.svg)](https://travis-ci.org/facebook/php-graph-sdk)
+[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/facebook/facebook-php-sdk-v4/badges/quality-score.png?b=5.6)](https://scrutinizer-ci.com/g/facebook/facebook-php-sdk-v4/?branch=5.6)
+[![Latest Stable Version](http://img.shields.io/badge/Latest%20Stable-5.6.0-blue.svg)](https://packagist.org/packages/facebook/graph-sdk)
 
 
 This repository contains the open source PHP SDK that allows you to access the Facebook Platform from your PHP app.

src/Facebook/Facebook.php

@@ -53,7 +53,7 @@ class Facebook
     /**
      * @const string Version number of the Facebook PHP SDK.
      */
-    const VERSION = '5.5.0';
+    const VERSION = '5.6.0';
 
     /**
      * @const string Default Graph API version for requests.