Docs: add Marketplace badges and install instructions

The extension is published at
https://marketplace.visualstudio.com/items?itemName=mikesoft.vscode-super-cli

Author: TheStreamCode

README.md

@@ -1,5 +1,9 @@
 # Super CLI
 
+[![Visual Studio Marketplace Version](https://img.shields.io/visual-studio-marketplace/v/mikesoft.vscode-super-cli?label=Marketplace&color=6366F1)](https://marketplace.visualstudio.com/items?itemName=mikesoft.vscode-super-cli)
+[![Visual Studio Marketplace Installs](https://img.shields.io/visual-studio-marketplace/i/mikesoft.vscode-super-cli?color=0EA5E9)](https://marketplace.visualstudio.com/items?itemName=mikesoft.vscode-super-cli)
+[![CI](https://github.com/TheStreamCode/super-cli/actions/workflows/ci.yml/badge.svg)](https://github.com/TheStreamCode/super-cli/actions/workflows/ci.yml)
+
 One VS Code extension to launch any coding agent CLI — **Claude Code, Codex, GitHub Copilot CLI,
 Gemini, Grok, Kilo, Antigravity, and your own** — from a single sidebar and a side terminal.
 
@@ -9,6 +13,19 @@ Windsurf).
 This extension is unofficial and is not affiliated with, endorsed by, or sponsored by Anthropic,
 OpenAI, GitHub, Google, or any other vendor.
 
+## Install
+
+Install **Super CLI** from the
+[Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=mikesoft.vscode-super-cli),
+or from the command line:
+
+```bash
+code --install-extension mikesoft.vscode-super-cli
+```
+
+You can also open the Extensions view in VS Code (or Cursor, Antigravity, Windsurf), search for
+**Super CLI**, and click **Install**.
+
 ## Features
 
 - **One launcher for every agent.** A **Super CLI** view in the activity bar lists all configured