Make README badges link to useful destinations

The NPM and license badges now link to:
- NPM badge → npm package page
- License badge → LICENSE file in repo

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: antonpk1

README.md

@@ -1,4 +1,4 @@
-# MCP TypeScript SDK ![NPM Version](https://img.shields.io/npm/v/%40modelcontextprotocol%2Fsdk) ![MIT licensed](https://img.shields.io/npm/l/%40modelcontextprotocol%2Fsdk)
+# MCP TypeScript SDK [![NPM Version](https://img.shields.io/npm/v/%40modelcontextprotocol%2Fsdk)](https://www.npmjs.com/package/@modelcontextprotocol/sdk) [![MIT licensed](https://img.shields.io/npm/l/%40modelcontextprotocol%2Fsdk)](https://github.com/modelcontextprotocol/typescript-sdk/blob/main/LICENSE)
 
 ## Table of Contents