Creates Google Workflow Target Documentation (#147)

Author: JeffNeff

docs/targets/googlecloudworkflows.md

@@ -0,0 +1,38 @@
+# Event Target for Google Cloud Workflows
+
+This event target receives [CloudEvents][ce] over HTTP and sends them to [Google Cloud Workflows](https://cloud.google.com/workflows)
+
+## Prerequisite(s)
+
+- Google Cloud Console account.
+- A service account and it's associated JSON credentials.
+
+## Deploying an Instance of the Target
+
+Open the Bridge creation screen and add a target of type `Google Cloud Workflows`.
+
+In the Target creation form, give a name to the event Target and add the following information:
+
+- **Credentials**: Reference to a [TriggerMesh secret](../guides/secrets.md) containing the JSON credentials of a Service Account.
+
+After clicking the `Save` button, you will be taken back to the Bridge editor. Proceed to adding the remaining
+components to the Bridge, then submit it.
+
+A ready status on the main _Bridges_ page indicates that the Google Cloud Workflows target is ready to accept events.
+
+For more information about using Google Cloud Workflows, please refer to the [documentation][https://cloud.google.com/workflows/docs].
+
+## Event Types
+### io.trigermesh.google.workflows.run
+
+Events of this type contain nuanced data that is used to run a Google Workflow.
+
+This type expects a [JSON][ce-jsonformat] payload with the following properties:
+
+| Name  |  Type |  Comment | Example
+|---|---|---|---|
+| **parent** | string | Project and location in which the workflow should be created. Format:  `projects/{project}/locations/{location}` | "projects/ultra-hologram-297914/locations/us-central1" |
+| **executionName** | string |  The resource name of the execution. Format: `projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}`| "demowf" | 
+
+[ce]: https://cloudevents.io/
+[ce-jsonformat]: https://github.com/cloudevents/spec/blob/v1.0/json-format.md

docs/targets/index.md

@@ -15,6 +15,7 @@ The following is a list of Triggermesh event destinations known as `Targets`. So
 - [Confluent](./confluent.md): Forward events to Confluent Kafka.
 - [Datadog](./datadog.md): Forward event payload to Datadog.
 - [Elasticsearch](./elasticsearch.md): Send events to Elasticsearch to be indexed.
+- [Google Cloud Workflows](./googlecloudworkflows.md): Execute Google Cloud Workflows with Cloudevents. 
 - [Google Firestore](./googlefirestore.md): Send events to Google Firestore
 - [Google Sheets](./googlesheets.md): Append events to a GoogleSheets Sheet row.
 - [Hasura](./hasura.md): Send GraphQL queries to Hasura.
@@ -29,4 +30,4 @@ The following is a list of Triggermesh event destinations known as `Targets`. So
 - [Splunk](./splunk.md): Forward arbitrary events to Splunk.
 - [Tekton](./tekton.md): Use event to submit a Tekton build.
 - [Twilio](./twilio.md): Send an SMS via Twilio in response to events.
-- [Zendesk](./zendesk.md): Perform actions in Zendesk upon reception of certain events.
+- [Zendesk](./zendesk.md): Perform actions in Zendesk upon reception of certain events.