add local setup instructions to readme

README.md

@@ -25,3 +25,22 @@ If you have a question about using Jekyll, start a discussion on the [Jekyll For
 - [Ruby 101](https://jekyllrb.com/docs/ruby-101/)
 - [Setting up a Jekyll site with GitHub Pages](https://jekyllrb.com/docs/github-pages/)
 - [Configuring GitHub Metadata](https://github.com/jekyll/github-metadata/blob/master/docs/configuration.md#configuration) to work properly when developing locally and avoid `No GitHub API authentication could be found. Some fields may be missing or have incorrect data.` warnings.
+
+---
+
+## Local Setup
+
+### Prerequisites
+- Ruby
+- Jekyll
+
+Follow these [instructions](https://jekyllrb.com/docs/installation/).
+
+### Run
+```bash
+   bundle install
+```
+
+```bash
+   bundle exec jekyll serve
+```