Update README.md

Author: drew-hirewheel

README.md

@@ -3,10 +3,10 @@
 The DataRole API Client Library enables you to work with DataRole APIs on your server.
 
 ## Requirements ##
-* [PHP 5.4.0 or higher](http://www.php.net/)
+* [PHP 5.5.0 or higher](http://www.php.net/)
 
 ## Developer Documentation ##
-http://developers.datarole.com/api
+[Official DataRole Address Intelligence API Documentation](https://github.com/datarole/api/blob/master/sdks/)
 
 ## Installation ##