Do not pytest & Create status badge

Author: joonas-yoon

.github/workflows/pythonapp.yml

@@ -31,7 +31,3 @@ jobs:
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - name: Test with pytest
-      run: |
-        pip install pytest
-        pytest

README.md

@@ -1,5 +1,7 @@
 # BOJ source saver
 
+![Python application](https://github.com/joonas-yoon/boj-source-saver/workflows/Python%20application/badge.svg)
+
 Save your ACCEPTED codes on [BOJ](https://www.acmicpc.net)
 
 ## Requirements