Merge pull request #43 from Julian/patch-1

Update README example to use latest actions/setup-python and actions/checkout versions

README.md

@@ -22,8 +22,8 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - uses: actions/setup-python@v1
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
     - uses: pre-commit/action@v2.0.0
 ```