update README.md

Author: ivanvasutinskiy

README.md

@@ -1,2 +1,4 @@
 ### Hexlet tests and linter status:
-[![Actions Status](https://github.com/ivanvasutinskiy/python-project-49/actions/workflows/hexlet-check.yml/badge.svg)](https://github.com/ivanvasutinskiy/python-project-49/actions)
+[![Actions Status](https://github.com/ivanvasutinskiy/python-project-49/actions/workflows/hexlet-check.yml/badge.svg)](https://github.com/ivanvasutinskiy/python-project-49/actions)
+
+[![Maintainability](https://api.codeclimate.com/v1/badges/5e002949e4c499150d5e/maintainability)](https://codeclimate.com/github/ivanvasutinskiy/python-project-49/maintainability)