update readme

Author: rtancman

README.md

@@ -1,10 +1,16 @@
 # docker-symfony
-Docker image to run symfony using:
+[![](https://badge.imagelayers.io/rtancman/docker-symfony:latest.svg)](https://imagelayers.io/?images=rtancman/docker-symfony:latest 'Get your own badge on imagelayers.io')
+
+# Dockerfile links
+[docker-symfony:php-5.5](https://github.com/rtancman/docker-symfony/tree/master/php-5.5)
+[docker-symfony:latest - php-5.6](https://github.com/rtancman/docker-symfony/tree/master/php-5.6)
+
+# Docker image to run symfony using
 - nginx
 - memcached
 - phpfpm
 
-# php extensions:
+# php extensions
 - iconv 
 - mcrypt 
 - mysql