Add installation docs

docs/content/docs/config-options.md

@@ -2,7 +2,7 @@
 date: 2022-06-01
 title: "Configuring the Pagefind CLI"
 nav_title: "Configuration options"
-nav_section: CLI configuration
+nav_section: Running Pagefind
 weight: 51
 ---
 

docs/content/docs/config-sources.md

@@ -2,7 +2,7 @@
 date: 2022-06-01
 title: "Pagefind CLI configuration sources"
 nav_title: "Configuration sources"
-nav_section: CLI configuration
+nav_section: Running Pagefind
 weight: 50
 ---
 

docs/content/docs/installation.md

@@ -0,0 +1,44 @@
+---
+date: 2022-06-01
+title: "Installing and running Pagefind"
+nav_title: "Installation"
+nav_section: Running Pagefind
+weight: 49
+---
+
+Pagefind is a static binary with no dynamic dependencies, so in most cases will be simple to install and run.
+
+> Pagefind does not yet have a prebult Windows binary available.
+
+## Running via npx
+
+```bash
+npx pagefind --source "public"
+```
+
+Pagefind publishes a [wrapper package through npm](https://www.npmjs.com/package/pagefind), which is the easiest way to get started. This package will download the correct [binary of the latest release](https://github.com/CloudCannon/pagefind/releases) from GitHub for your platform and run it.
+
+Specific versions can be run by passing a version tag:
+
+```bash
+npx pagefind@latest --source "public"
+
+npx [email protected] --source "public"
+```
+
+## Downloading a precompiled binary
+
+If you prefer to install Pagefind yourself, you can download a [precompiled release from GitHub](https://github.com/CloudCannon/pagefind/releases) and run the binary directly:
+
+```bash
+./pagefind --source "public"
+```
+
+## Building from source
+
+If you have [Rust and Cargo](https://doc.rust-lang.org/cargo/getting-started/installation.html) installed, you can run `cargo install pagefind` to build from source.
+
+```bash
+cargo install pagefind
+pagefind --source "public"
+```