Merge pull request #1 from copilot-extensions/improve-readme

Improve README

README.md

@@ -1,5 +1,25 @@
 # @gh-models Copilot Extension
 
+This is a [GitHub Copilot Extension](https://docs.github.com/en/copilot/using-github-copilot/using-extensions-to-integrate-external-tools-with-copilot-chat) that provides a way to interact with [GitHub Models](https://github.blog/news-insights/product-news/introducing-github-models/), directly in Copilot Chat.
+
+> [!NOTE]
+> To use Copilot Extensions, you must be enrolled in the limited public beta.
+> 
+> All enrolled users with a GitHub Copilot Individual subscription can use Copilot Extensions.
+> 
+> For enrolled organizations or enterprises with a Copilot Business or Copilot Enterprise subscription, organization owners and enterprise administrators can grant access to Copilot Extensions.
+
+## What it can do
+
+You can ask it things like "what models are available?" or "which model should I use for my use-case?". You can also ask it to execute a basic prompt using a particular model.
+
+| Description | Image |
+| --- |--- |
+| User asking `@gh-models` for a recommended model that is low-cost and supports function calling | ![User asking @gh-models for a recommended model that is low-cost and supports function calling](https://github.com/user-attachments/assets/aed29aa3-2056-44c5-8c7b-e8ef7ffa3301) |
+| Dialogue with the Extension, asking for an OpenAI model | ![Dialogue with the Extension, asking for an OpenAI model](https://github.com/user-attachments/assets/f08b23a9-7f2c-4da7-b764-7220dcda9408) |
+| User executing a basic prompt using the model that the extension recommended | ![User executing a basic prompt using the model that the extension recommended](https://github.com/user-attachments/assets/795dd669-aea2-4b88-9c27-0836008c28a4) |
+| In VS Code, explain code using a specific model | <img width="838" alt="image" src="https://github.com/user-attachments/assets/c019ed37-5494-4cb6-9e21-82ecf3235dcc"> |
+
 ## Development
 
 Install dependencies:
@@ -8,15 +28,14 @@ Install dependencies:
 npm install
 ```
 
-To run:
-
+To run in development mode:
 
 ```bash
 npm run dev
 ```
 
-To build:
+To build and run in production mode:
 
 ```bash
-npm run build
+npm run build && npm start
 ```