update badge URLs

Author: xabbuh

README.md

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 Common Doctrine Based xAPI Storage Classes
 ==========================================
 
-[![Build Status](https://travis-ci.org/xabbuh/xapi-doctrine-storage.svg?branch=master)](https://travis-ci.org/xabbuh/xapi-doctrine-storage)
-[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/xabbuh/xapi-doctrine-storage/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/xabbuh/xapi-doctrine-storage/?branch=master)
-[![Code Coverage](https://scrutinizer-ci.com/g/xabbuh/xapi-doctrine-storage/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/xabbuh/xapi-doctrine-storage/?branch=master)
+[![Build Status](https://travis-ci.org/php-xapi/xapi-doctrine-storage.svg?branch=master)](https://travis-ci.org/php-xapi/xapi-doctrine-storage)
+[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/php-xapi/xapi-doctrine-storage/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/php-xapi/xapi-doctrine-storage/?branch=master)
+[![Code Coverage](https://scrutinizer-ci.com/g/php-xapi/xapi-doctrine-storage/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/php-xapi/xapi-doctrine-storage/?branch=master)
 
 Common classes for Doctrine based [xAPI storage](https://github.com/xabbuh/xapi-storage-api/)
 implementations.