docs: add code --add-mcp CLI install command

Author: Dev Agent Amelia

README.md

@@ -12,7 +12,17 @@ MCP server that exposes the Microsoft Dataverse Web API as **50 AI-callable tool
 
 [![Install in VS Code](https://img.shields.io/badge/VS%20Code-Install-0078d4?logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode%3Amcp%2Finstall%3F%257B%2522name%2522%253A%2522mcp-dataverse%2522%252C%2522command%2522%253A%2522npx%2522%252C%2522args%2522%253A%255B%2522-y%2522%252C%2522mcp-dataverse%2522%255D%257D) [![Install in VS Code Insiders](https://img.shields.io/badge/VS%20Code%20Insiders-Install-24bfa5?logo=visualstudiocode)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Amcp%2Finstall%3F%257B%2522name%2522%253A%2522mcp-dataverse%2522%252C%2522command%2522%253A%2522npx%2522%252C%2522args%2522%253A%255B%2522-y%2522%252C%2522mcp-dataverse%2522%255D%257D)
 
-### Manual (npx)
+### Command line
+
+```bash
+# VS Code
+code --add-mcp '{"name":"mcp-dataverse","command":"npx","args":["-y","mcp-dataverse"]}'
+
+# VS Code Insiders
+code-insiders --add-mcp '{"name":"mcp-dataverse","command":"npx","args":["-y","mcp-dataverse"]}'
+```
+
+### Manual (mcp.json)
 
 Add to your `.vscode/mcp.json` (or user settings):