More docs

Author: orta

README.md

@@ -94,6 +94,17 @@ Then 2 for handling fallbacks on PRs which aren't able to be maintained by anyon
 - `if_no_maintainers_add_label` - A label to add which denotes it is a maintainers PR to handle
 - `if_no_maintainers_assign` - A string of `@` prefixed GitHub usernames, separated by spaces which denotes who should be assigned to PRs which don't get a CODEOWNER.
 
+```yml
+- name: Run Codeowners merge check
+  uses: OSS-Docs-Tools/code-owner-self-merge@v1
+  env:
+    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  with:
+    merge_method: 'squash'
+    if_no_maintainers_add_label: 'maintainers'
+    if_no_maintainers_assign: '@orta @sandersn'
+```
+
 ### Dev
 
 Use `npx jest --watch` to run tests.