Update pythonapp.yml

.github/workflows/pythonapp.yml

@@ -24,3 +24,7 @@ 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=88 --statistics
+    - name: Test with pytest	
+      run: |	
+        pip install pytest	
+        pytest