update readme

Author: robherley

README.md

@@ -2,9 +2,11 @@
 
 GitHub Action for running `go test ...` and getting rich summary and annotations as output.
 
-Powered by [Job Summaries](https://github.blog/2022-05-09-supercharging-github-actions-with-job-summaries/), this Action will generate a convenient interactive viewer for tests based on Go's [test2json](https://pkg.go.dev/cmd/test2json) output.
+Powered by [Job Summaries](https://github.blog/2022-05-09-supercharging-github-actions-with-job-summaries/), this Action will generate a convenient interactive viewer for tests based on Go's [test2json](https://pkg.go.dev/cmd/test2json) output. If there are any errors during `go test`, the Action will report back the same exit code, which will fail the job.
 
-## Example
+## Demo
+
+To interact with an example, [check it out here](https://github.com/robherley/go-test-example/actions/runs/2647255176/attempts/1).
 
 Tests are organized per package, with a brief summary of individual test results:
 
@@ -18,6 +20,32 @@ Expand for per-test (with subtest) results and to view raw test output:
 
 - `moduleDirectory` (optional): relative path to the directory containing the `go.mod` of the module you wish to test
   - Default: `.`
-- `testArguments` (optional): arguments to pass to `go test`, `-json` will be prepended
+- `testArguments` (optional): arguments to pass to `go test`, `-json` will be prepended automatically
   - Default: `./...`
 
+## Example workflow
+
+```yaml
+name: Go
+
+on:
+  push:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.18
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      uses: robherley/go-test-action@v0.0.1
+```
+