docs: add MCP client configuration to example READMEs

Add stdio transport configuration snippets near the top of each example
README to help users quickly set up the servers in their MCP clients.

- Node.js examples use npx with the published npm packages
- Python qr-server uses uv with local path
- Removed Claude Desktop-specific references from qr-server

examples/map-server/README.md

@@ -4,6 +4,27 @@
 
 Interactive 3D globe viewer using CesiumJS with OpenStreetMap tiles. Demonstrates geocoding integration and full MCP App capabilities.
 
+## MCP Client Configuration
+
+Add to your MCP client configuration (stdio transport):
+
+```json
+{
+  "mcpServers": {
+    "map": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "--silent",
+        "--registry=https://registry.npmjs.org/",
+        "@modelcontextprotocol/server-map",
+        "--stdio"
+      ]
+    }
+  }
+}
+```
+
 ## Features
 
 - **3D Globe Rendering**: Interactive CesiumJS globe with rotation, zoom, and 3D perspective