Added initial mkdocs files.

.gitignore

@@ -0,0 +1,5 @@
+# Ignore Python virtual environment.
+.env/
+# Ignore mkdocs build dir.
+site/
+.cache/

README.md

@@ -2,3 +2,16 @@
 
 This repository contains the source code for the Handy-Http website that is
 used to showcase the project and provide easy access to documentation.
+
+The website is built using MkDocs, and we develop it in a Python [virtual
+environment](https://docs.python.org/3/library/venv.html).
+
+## Setup
+```shell
+python3 -m venv .env
+source .env/bin/activate
+pip install mkdocs
+pip install mkdocs-material
+```
+
+To exit the Python virtual environment, type `deactivate` in your shell.

docs/getting-started.md

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+# Getting Started
+
+The easiest way to get started is to use the [starter](https://git.andrewlalis.com/Handy-Http/starter)
+dependency, which automatically includes the components needed to boot up a
+simple HTTP server.
+
+In the example below, we create a new D project named **my-server**, and add
+the `handy-http-starter` dependency to it.
+```shell
+dub init my-server
+cd my-server
+dub add handy-http-starter
+```
+
+Then, edit your main D function like so:
+```d title="main.d"
+import handy_http_starter;
+
+void main() {
+    startServer((ref request, ref response) {
+        response.headers.add("Content-Type", "text/plain");
+        response.headers.add("Content-Length", "12");
+        response.outputStream.write(cast(ubyte[]) "Hello world!")
+    });
+}
+```
+
+In the above code, we take advantage of Handy-Http Starter's shortcuts to quickly boot up an HTTP server on `http://localhost:8080` that responds to any request with `Hello world!`, by executing the provided [delegate function](https://tour.dlang.org/tour/en/basics/delegates) whenever a request is received.

docs/index.md

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+# Home
+
+Welcome to the documentation site for Handy-Http. Here you'll find guides on how to get started with writing D web servers using Handy-Http, as well as detailed reference documentation for each of the various components that make up the project.
+
+## About Handy-Http
+
+Handy-Http is a collection of [D lang](https://dlang.org/) source libraries that provide a means for you to run an HTTP server. It started originally as an all-in-one hobby project that Andrew created a few years ago to escape from the clutches of Java's Spring ecosystem. D offers arguably better developer ergonomics, as well as monumental performance improvements due to its static compilation to machine code. Since its inception, it's gone through a few iterations before settling on the modular architecture presented here.

mkdocs.yml

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+site_name: Handy-Http
+site_url: https://handy-http.andrewlalis.com
+
+nav:
+  - Home: index.md
+  - Getting Started: getting-started.md
+
+theme:
+  name: material
+  palette:
+    # Palette toggle for automatic mode
+    - media: "(prefers-color-scheme)"
+      toggle:
+        icon: material/brightness-auto
+        name: Switch to light mode
+    # Palette toggle for light mode
+    - media: "(prefers-color-scheme: light)"
+      scheme: default 
+      toggle:
+        icon: material/brightness-7
+        name: Switch to dark mode
+    # Palette toggle for dark mode
+    - media: "(prefers-color-scheme: dark)"
+      scheme: slate
+      toggle:
+        icon: material/brightness-4
+        name: Switch to system preference
+
+markdown_extensions:
+  - pymdownx.highlight:
+      anchor_linenums: true
+      line_spans: __span
+      pygments_lang_class: true
+  - pymdownx.inlinehilite
+  - pymdownx.snippets
+  - pymdownx.superfences
+
+plugins:
+  - privacy