Add build per job to see status of each library

Author: joelwurtz

README.md

@@ -1,11 +1,18 @@
 # HTTP Message
 
 [![Latest Version](https://img.shields.io/github/release/php-http/psr7-integration-tests.svg?style=flat-square)](https://github.com/php-http/psr7-integration-tests/releases)
-[![Build Status](https://img.shields.io/travis/php-http/psr7-integration-tests/master.svg?style=flat-square)](https://travis-ci.org/php-http/psr7-integration-tests)
 [![Total Downloads](https://img.shields.io/packagist/dt/php-http/psr7-integration-tests.svg?style=flat-square)](https://packagist.org/packages/php-http/psr7-integration-tests)
 
-**HTTP Message related tools.**
+**Test PSR7 implementations against the specification.**
 
+## Status
+
+| PSR7 Implementation | Status        |
+| ------------------- |:-------------:|
+| Guzzle              | ![Guzzle](https://travis-matrix-badges.herokuapp.com/repos/php-http/psr7-integration-tests/branches/master/1)     |
+| Zend                | ![Zend](https://travis-matrix-badges.herokuapp.com/repos/php-http/psr7-integration-tests/branches/master/2)      |
+| Slim                | ![Slim](https://travis-matrix-badges.herokuapp.com/repos/php-http/psr7-integration-tests/branches/master/3)      |
+| Nyholm              | ![Nyholm](https://travis-matrix-badges.herokuapp.com/repos/php-http/psr7-integration-tests/branches/master/4)      |
 
 ## Install