bring back the badges (#275)

README.md

@@ -1,5 +1,11 @@
 # svFSIplus
 
+[![Build Status](https://github.com/SimVascular/svFSIplus/actions/workflows/test.yml/badge.svg)](https://github.com/SimVascular/svFSIplus/actions)
+[![codecov](https://codecov.io/github/SimVascular/svFSIplus/graph/badge.svg?token=I848DNIHSP)](https://codecov.io/github/SimVascular/svFSIplus)
+![Latest Release](https://img.shields.io/github/v/release/SimVascular/svFSIplus?label=latest)
+![Platform](https://img.shields.io/badge/platform-macOS%20|%20linux-blue)
+[![DOI](https://img.shields.io/badge/DOI-10.21105%2Fjoss.04118-green)](https://doi.org/10.21105/joss.04118)
+
 ### Table of Contents
 **[Introduction](#introduction)**<br>
 **[Building the svFSIplus Program from Source](#building)**<br>