Add index page for demo site

demo/app/pages/overview.md.erb

@@ -0,0 +1,36 @@
+---
+title: Polaris ViewComponents
+---
+
+Polaris ViewComponents is an implementation of the [Polaris Design System](https://polaris.shopify.com/components) using ViewComponents.
+
+## Example
+
+<lookbook-embed
+  app="http://localhost:4000/lookbook/"
+  preview="CardComponentPreview"
+  scenario="default"
+  panels="source,output">
+</lookbook-embed>
+
+## Dependencies
+
+- [Stimulus](https://stimulus.hotwired.dev/)
+
+## Installation
+
+Add polaris_view_components to your Gemfile:
+
+```bash
+bundle add polaris_view_components
+```
+
+Run installer:
+
+```bash
+bin/rails polaris_view_components:install
+```
+
+## Source code
+
+The source code is available on [GitHub](/~https://github.com/baoagency/polaris_view_components).

demo/config/application.rb

@@ -46,5 +46,6 @@ class Application < Rails::Application
 
     # Lookbook
     config.lookbook.project_name = "Polaris ViewComponents"
+    config.lookbook.page_paths = ["app/pages"]
   end
 end