Merge pull request phpredis#1912 from phpredis/issue-1907

Issue phpredis#1907

Author: yatsukhnenko

README.markdown

@@ -2,6 +2,7 @@
 
 [![Build Status](https://travis-ci.org/phpredis/phpredis.svg?branch=develop)](https://travis-ci.org/phpredis/phpredis)
 [![Coverity Scan Build Status](https://scan.coverity.com/projects/13205/badge.svg)](https://scan.coverity.com/projects/phpredis-phpredis)
+[![PHP version from Travis config](https://img.shields.io/travis/php-v/phpredis/phpredis/develop)](https://img.shields.io/travis/php-v/phpredis/phpredis/develop)
 
 The phpredis extension provides an API for communicating with the [Redis](http://redis.io/) key-value store. It is released under the [PHP License, version 3.01](http://www.php.net/license/3_01.txt).
 This code has been developed and maintained by Owlient from November 2009 to March 2011.