godev/cmd/telemetrygodev: add README.md
Created README.md to outline local development and deploy processes.
Change-Id: I403eb4a25e31e27a3b11a39823a59f004a66c720
Reviewed-on: https://go-review.googlesource.com/c/telemetry/+/496959
Run-TryBot: Jamal Carvalho <jamal@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
diff --git a/godev/cmd/telemetrygodev/README.md b/godev/cmd/telemetrygodev/README.md
new file mode 100644
index 0000000..7bae7ca
--- /dev/null
+++ b/godev/cmd/telemetrygodev/README.md
@@ -0,0 +1,28 @@
+# telemetrygodev
+
+## Local Development
+
+For local development, simply build and run. It serves on localhost:8080.
+
+ go run .
+
+## Testing
+
+The telemetry.go.dev web site has a suite of regression tests that can be run with:
+
+ go test golang.org/x/telemetry/...
+
+## Deploying
+
+Each time a CL is reviewed and submitted, the site is automatically deployed to Cloud Run.
+If it passes its serving-readiness checks, it will be automatically promoted to handle traffic.
+
+If the automatic deployment is not working, or to check on the status of a pending deployment,
+see the “telemetrygodev” trigger in the
+[Cloud Build history](https://pantheon.corp.google.com/cloud-build/builds?project=go-telemetry).
+
+### Test Instance
+
+To deploy a test instance of this service, push to a branch and manually trigger the deploy job from
+the [Cloud Build console](https://pantheon.corp.google.com/cloud-build/triggers?project=go-telemetry)
+with the desired values for branch and service name.
