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README.md

 ## Backend for the MIP portal
 
 [![License](https://img.shields.io/badge/license-AGPL--3.0-blue.svg)](https://www.gnu.org/licenses/agpl-3.0.html)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/087c83d0601a46c7a4dd91f2e5935a5a)](https://www.codacy.com/app/mirco-nasuti/portal-backend?utm_source=github.com&utm_medium=referral&utm_content=LREN-CHUV/portal-backend&utm_campaign=Badge_Grade)
 ![CircleCI](https://circleci.com/gh/LREN-CHUV/portal-backend/tree/master.svg?style=svg)
 
 ## Usage