adding outputs example (now tested)

Signed-off-by: vsoch <vsochat@stanford.edu>

README.md

@@ -74,6 +74,14 @@ An environment variable of course can be referenced as you usually would.
 | assignees_return_code | Return code for the assignees request | ASSIGNEES_RETURN_CODE |
 | reviewers_return_code | Return code for the reviewers request | REVIEWERS_RETURN_CODE |
 
+See the [examples/outputs-example.yml](examples/outputs-example.yml) for how this works. 
+In this example, we can reference `${{ steps.pull_request.outputs.pull_request_url }}`
+in either another environment variable declaration, or within a run statement to access
+our variable `pull_request_url` that was generated in a step with id `pull_request`.
+The screenshot below shows the example in action to interact with outputs in several ways.
+
+![img/outputs.png](img/outputs.png)
+
 ## Examples
 
 Example workflows are provided in [examples](examples), and please contribute any

examples/outputs-example.yml

@@ -0,0 +1,28 @@
+name: Pull Request on Branch Push
+on:
+  push:
+    branches-ignore:
+      - devel
+jobs:
+  auto-pull-request:
+    name: PullRequestAction
+    runs-on: ubuntu-latest
+    steps:
+      - name: pull-request-action
+        id: pull_request
+        uses: vsoch/pull-request-action@add/outputs
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          BRANCH_PREFIX: "update/"
+          PULL_REQUEST_BRANCH: "master"
+          PULL_REQUEST_REVIEWERS: vsoch
+      - name: Test outputs
+        env:
+          pull_request_number_output: ${{ steps.pull_request.outputs.pull_request_number }}
+          pull_request_url_output: ${{ steps.pull_request.outputs.pull_request_url }}
+        run: |
+          echo "Pull request number from output: ${pull_request_number_output}"
+          echo "Pull request url from output: ${pull_request_url_output}"
+          echo "Pull request number from environment: ${PULL_REQUEST_NUMBER}"
+          echo "Pull request url from environment: ${PULL_REQUEST_URL}"
+          echo "Another way to specify from output ${{ steps.pull_request.outputs.pull_request_number }}"