Update README

Author: peter-evans

README.md

@@ -179,6 +179,25 @@ The simplest response is to add a :tada: reaction to the comment.
           reaction-type: hooray
 ```
 
+Another option is to reply with a new comment containing a link to the run output.
+
+```yml
+      - name: Create URL to the run output
+        id: vars
+        run: echo ::set-output name=run-url::https://github.com/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID
+
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v1
+        with:
+          token: ${{ secrets.REPO_ACCESS_TOKEN }}
+          repository: ${{ github.event.client_payload.github.payload.repository.full_name }}
+          issue-number: ${{ github.event.client_payload.github.payload.issue.number }}
+          body: |
+            [Command run output][1]
+
+            [1]: ${{ steps.vars.outputs.run-url }}
+```
+
 ## License
 
 [MIT](LICENSE)