Merge branch '2.0' into merge-master

Author: ahocquard

README.md

@@ -2,8 +2,12 @@
 
 A simple PHP client to use the [Akeneo PIM API](https://api.akeneo.com/).
 
-- The version v1.0 is compatible with the PIM 2.0.
-- The version v2.0 is compatible with the PIM 2.1.
+Matrix compatibility:
+
+| API PHP Client version | PIM version(s) | CI status                                                                                                                 |
+|------------------------|----------------|---------------------------------------------------------------------------------------------------------------------------|
+| v1.0                   | v2.0           | [![Build Status](https://travis-ci.org/akeneo/api-php-client.svg?branch=1.0)](https://travis-ci.org/akeneo/api-php-client)|
+| v2.0                   | v2.1 - v2.2    | [![Build Status](https://travis-ci.org/akeneo/api-php-client.svg?branch=2.0)](https://travis-ci.org/akeneo/api-php-client)|
 
 ## Requirements