Update README.md

Dear @ferrarimarco, feel free to make officially "official" 😉 
And thank you very much for supporting this project!

Author: skywinder

README.md

@@ -1,7 +1,7 @@
 # Dockerized Github Changelog Generator
 [![Build Status](https://travis-ci.org/ferrarimarco/docker-github-changelog-generator.svg?branch=master)](https://travis-ci.org/ferrarimarco/docker-github-changelog-generator) ![Docker Stars](https://img.shields.io/docker/stars/ferrarimarco/github-changelog-generator.svg) [![Docker Pulls](https://img.shields.io/docker/pulls/ferrarimarco/github-changelog-generator.svg)](https://hub.docker.com/r/ferrarimarco/github-changelog-generator/) [![Docker Automated build](https://img.shields.io/docker/automated/ferrarimarco/github-changelog-generator.svg)](https://hub.docker.com/r/ferrarimarco/github-changelog-generator/) ![Docker Build Status](https://img.shields.io/docker/build/ferrarimarco/github-changelog-generator.svg)
 
-This is a semi-official containerization of [Github Changelog Generator](https://github.com/skywinder/github-changelog-generator).
+This is a official containerization of [Github Changelog Generator](https://github.com/skywinder/github-changelog-generator).
 
 For each Github Changelog Generator release, you will find the corresponding docker image tag.