Added Crowdin badge

Author: benatespina

README.md

@@ -32,6 +32,11 @@ If you have any doubt or maybe you want to share some opinion, you can use our *
 
 [![Join the chat at https://gitter.im/BenGorUser/User](https://badges.gitter.im/BenGorUser/User.svg)](https://gitter.im/BenGorUser/User?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
+BenGorUser uses [Crowdin][7] as tool to manage translations so, please help us translating your favorite language
+via this service. Pull requests about translations will not be accepted.
+
+[![Crowdin](https://d322cqt584bo4o.cloudfront.net/bengoruser/localized.svg)](https://crowdin.com/project/bengoruser)
+
 This library follows PHP coding standards, so pull requests need to execute the Fabien Potencier's [PHP-CS-Fixer][5].
 Furthermore, if the PR creates some not-PHP file remember that you have to put the license header manually. In order
 to simplify we provide a Composer script that wraps all the commands related with this process.
@@ -62,3 +67,4 @@ This library is created by:
 [4]: http://symfony.com/doc/current/contributing/code/patches.html#make-a-pull-request
 [5]: http://cs.sensiolabs.org/
 [6]: http://getcomposer.org
+[7]: https://crowdin.com/