Merge pull request #20 from pradyunsg/patch-1

Update example to newer actions/* versions
diff --git a/README.md b/README.md
index 92bbe9b..ea555e6 100644
--- a/README.md
+++ b/README.md
@@ -22,8 +22,8 @@
   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
     - name: set PY
       run: echo "::set-env name=PY::$(python -c 'import hashlib, sys;print(hashlib.sha256(sys.version.encode()+sys.executable.encode()).hexdigest())')"
     - uses: actions/cache@v1