Update README.md

Author: pashidlos

README.md

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 # Backend app for [Visual Regression Tracker](https://github.com/Visual-Regression-Tracker/Visual-Regression-Tracker)
 
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/7d43b68b39cd41aa830120371be736ad)](https://www.codacy.com/gh/Visual-Regression-Tracker/backend?utm_source=github.com&utm_medium=referral&utm_content=Visual-Regression-Tracker/backend&utm_campaign=Badge_Grade)
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 [![Codacy Badge](https://app.codacy.com/project/badge/Coverage/7d43b68b39cd41aa830120371be736ad)](https://www.codacy.com/gh/Visual-Regression-Tracker/backend?utm_source=github.com&utm_medium=referral&utm_content=Visual-Regression-Tracker/backend&utm_campaign=Badge_Coverage)
 
 ## Local setup