Docs: Add link to french translation (#33)

Author: forresst

readme.md

@@ -1,5 +1,7 @@
 # ava-codemods [![Build Status](https://travis-ci.org/avajs/ava-codemods.svg?branch=master)](https://travis-ci.org/avajs/ava-codemods)
 
+Translations: [Français](https://github.com/avajs/ava-docs/blob/master/fr_FR/related/ava-codemods/readme.md)
+
 > Codemods for [AVA](https://ava.li) that simplifies upgrading to newer versions and migrating to AVA
 
 <img src="screenshot.gif" width="440" align="right">