Update README.md (coduo#119)

Author: 4t87ux8

README.md

@@ -239,6 +239,7 @@ DateTimeHumanizer::preciseDifference(new \DateTime("2014-04-26 13:00:00"), new \
 ```
 
 Currently we support following languages:
+* [Azerbaijani](src/Coduo/PHPHumanizer/Resources/translations/difference.az.yml)
 * [English](src/Coduo/PHPHumanizer/Resources/translations/difference.en.yml)
 * [Polish](src/Coduo/PHPHumanizer/Resources/translations/difference.pl.yml)
 * [German](src/Coduo/PHPHumanizer/Resources/translations/difference.de.yml)