[Docs] Add badge for node version

README.md

@@ -1,8 +1,9 @@
-# json-schema-to-typescript [![Build Status][build]](https://github.com/bcherny/json-schema-to-typescript/actions?query=branch%3Amaster+workflow%3ACI) [![npm]](https://www.npmjs.com/package/json-schema-to-typescript) [![mit]](https://opensource.org/licenses/MIT)
+# json-schema-to-typescript [![Build Status][build]](https://github.com/bcherny/json-schema-to-typescript/actions?query=branch%3Amaster+workflow%3ACI) [![npm]](https://www.npmjs.com/package/json-schema-to-typescript) [![mit]](https://opensource.org/licenses/MIT) ![node]
 
 [build]: https://img.shields.io/github/actions/workflow/status/bcherny/json-schema-to-typescript/ci.yml?style=flat-square
 [npm]: https://img.shields.io/npm/v/json-schema-to-typescript.svg?style=flat-square
 [mit]: https://img.shields.io/npm/l/json-schema-to-typescript.svg?style=flat-square
+[node]: https://img.shields.io/badge/Node.js-16+-417e37?style=flat-square
 
 > Compile json schema to typescript typings