Add Codacy badge

Author: codacy-badger

README.md

@@ -1,5 +1,7 @@
 # JS SDK for [Visual Regression Tracker](https://github.com/Visual-Regression-Tracker/Visual-Regression-Tracker)
 
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/b9a9e660b0e14c6c9fb38c7cf09ab16c)](https://app.codacy.com/gh/Visual-Regression-Tracker/sdk-js?utm_source=github.com&utm_medium=referral&utm_content=Visual-Regression-Tracker/sdk-js&utm_campaign=Badge_Grade_Dashboard)
+
 ## Install
 
 `npm install @visual-regression-tracker/sdk-js`