Add CONTRIBUTING.md

Author: gasparnagy

CONTRIBUTING.md

@@ -0,0 +1,23 @@
+# Contributing to Reqnroll WebSite
+
+## Building the site locally
+
+Prerequisites:
+
+* Ruby v3.3 or later
+
+Install dependencies
+
+* Invoke `bundle install`
+
+In order to test your changes, there are multiple options:
+
+* Build the site and host it locally with live reload (recommended)
+  * Invoke `bundle exec jekyll serve --livereload`
+  * This will host the site at http://127.0.0.1:4000/
+* Build the site once and host it locally
+  * Invoke `bundle exec jekyll serve`
+  * This will host the site at http://127.0.0.1:4000/
+* Build the site once
+  * Invoke `bundle exec jekyll build`
+  * The generated site is in the `_site` folder

_config.yml

@@ -114,4 +114,5 @@ sass:
 
 exclude:
   - README.md
+  - CONTRIBUTING.md
   - LICENSE