Create fix_readme.yml

.github/workflows/fix_readme.yml

@@ -0,0 +1,25 @@
+name: Update README
+
+on:
+  push:
+
+jobs:
+  update-readme:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Replace VARIABLE in README.md
+        run: |
+          BRANCH_NAME=${GITHUB_REF#refs/heads/}
+          sed -i "s/VARIABLE/$BRANCH_NAME/g" README.md
+
+      - name: Commit and push if it changed
+        run: |
+          git diff
+          git config --global user.email "actions@github.com"
+          git config --global user.name "GitHub Action"
+          git commit -am "Update README.md" --allow-empty
+          git push