Update README.md

Author: sir-gon

README.md

@@ -21,7 +21,15 @@
 
 ## TL;DR
 
-[Install and run](#install-and-run)
+Algorithms Exercises solved in [Javascript](https://tc39.es/),
+running with [Jest](https://jestjs.io/) testing suite.
+Developed with TDD.
+
+[![Javascript](https://img.shields.io/badge/JavaScript-F7DF1E?style=for-the-badge&logo=javascript&logoColor=black)](https://tc39.es/)
+[![Node.js](https://img.shields.io/badge/Node.js-43853D?style=for-the-badge&logo=node.js&logoColor=white)](https://nodejs.org/)
+[![Jest](https://img.shields.io/badge/Jest-323330?style=for-the-badge&logo=Jest&logoColor=white)](https://jestjs.io/)
+
+Go to [Install and run](#install-and-run)
 
 ## What is this?