Add a static site generator

There is no build for the element or site utilities like PrismJS yet, so this site only works locally at the moment.

docs-src/install.md

@@ -0,0 +1,30 @@
+---
+layout: page.11ty.cjs
+title: <my-element> ⌲ Install
+---
+
+# Install
+
+`<my-element>` is distributed on npm, so you can install it locally or use it via npm CDNs like unpkg.com.
+
+## Local Installation
+
+```bash
+npm i my-element
+```
+
+## CDN
+
+npm CDNs like [unpkg.com]() can directly serve files that have been published to npm. This works great for standard JavaScript modules that the browser can load natively.
+
+For this element to work from unpkg.com specifically, you need to include the `?module` query parameter, which tells unpkg.com to rewrite "bare" module specificers to full URLs.
+
+### HTML
+```html
+<script type="module" src="https://unpkg.com/my-element?module"></script>
+```
+
+### JavaScript
+```html
+import {MyElement} from 'https://unpkg.com/my-element?module';
+```