Add transport to quickstart too

Author: jspahrsummers

README.md

@@ -43,6 +43,7 @@ Let's create a simple MCP server that exposes a calculator tool and some data:
 
 ```typescript
 import { McpServer, ResourceTemplate } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
 import { z } from "zod";
 
 // Create an MCP server
@@ -70,6 +71,10 @@ server.resource(
     }]
   })
 );
+
+// Start receiving messages on stdin and sending messages on stdout
+const transport = new StdioServerTransport();
+await server.connect(transport);
 ```
 
 ## What is MCP?