update README and CI

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: extract_otp_secret_keys
+name: tests
 
 on: [push]
 
@@ -30,6 +30,3 @@ jobs:
       - name: Test with pytest
         run: |
           pytest
-      - name: Test with unittest
-        run: |
-          python -m unittest

README.md

@@ -4,6 +4,7 @@
 ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/protobuf)
 ![GitHub Pipenv locked Python version](https://img.shields.io/github/pipenv/locked/python-version/scito/extract_otp_secret_keys)
 ![License](https://img.shields.io/github/license/scito/extract_otp_secret_keys)
+![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/scito/extract_otp_secret_keys?sort=semver&label=version)
 
 ---