Merge pull request #203 from CESNET/remove-unstable-badge

docs: remove unstable version badge

Author: Dominik František Bučík

README.md

@@ -1,6 +1,5 @@
 # perun-simplesamlphp-module
 [![Latest Stable Version](https://poser.pugx.org/cesnet/simplesamlphp-module-perun/v/stable)](https://packagist.org/packages/cesnet/simplesamlphp-module-perun)
-[![Latest Unstable Version](https://poser.pugx.org/cesnet/simplesamlphp-module-perun/v/unstable)](https://packagist.org/packages/cesnet/simplesamlphp-module-perun)
 [![CI](https://github.com/CESNET/perun-simplesamlphp-module/actions/workflows/build_and_check.yml/badge.svg)](https://github.com/CESNET/perun-simplesamlphp-module/actions/workflows/build_and_check.yml)
 [![License](https://poser.pugx.org/cesnet/simplesamlphp-module-perun/license)](https://packagist.org/packages/cesnet/simplesamlphp-module-perun)
 
@@ -36,4 +35,4 @@ Any change that significantly changes behavior in a backward-incompatible way or
 
 Once you have installed SimpleSAMLphp, installing this module is very simple. First, you will need to download Composer if you haven't already. After installing Composer, just execute the following command in the root of your SimpleSAMLphp installation:
 
-`php composer.phar require cesnet/simplesamlphp-module-perun:dev-master`
+`php composer.phar require cesnet/simplesamlphp-module-perun:dev-master`