Create an About page in Middleman app hosted in GitHub Pages

middleman-webpack-demo index.html.erb

<!-- ../souce/about/index.html.erb -->

---
title: About
---

<h1>
  Hi there!
</h1>

<p>This is a Middleman app that uses Webpack to bundle assets and GitHub Actions to deploy everything to GitHub Pages :)</p>

<%= link_to 'Home', "../" %>