add vscode settings.json

.gitignore

@@ -9,3 +9,4 @@ venv/
 !example_output.csv
 !.github/
 !.flake8
+!.vscode/settings.json

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "python.testing.pytestArgs": [
+        "."
+    ],
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true
+}