auth section

Author: PatrickFarley

articles/cognitive-services/Face/QuickStarts/go-sdk.md

@@ -163,13 +163,12 @@ These code samples show you how to complete basic tasks using the Face service c
 ## Authenticate the client
 
 > [!NOTE] 
-> This quickstart assumes you've [created an environment variable](https://docs.microsoft.com/azure/cognitive-services/cognitive-services-apis-create-account#configure-an-environment-variable-for-authentication) for your Face service key, named `TBD_KEY`.
+> This quickstart assumes you've [created environment variables](https://docs.microsoft.com/azure/cognitive-services/cognitive-services-apis-create-account#configure-an-environment-variable-for-authentication) for your Face key and endpoint, named `FACE_SUBSCRIPTION_KEY` and `FACE_ENDPOINT` respectively.
 
-In a new method, instantiate a client with your endpoint and key. Create a [CognitiveServicesCredentials](https://docs.microsoft.com/python/api/msrest/msrest.authentication.cognitiveservicescredentials?view=azure-python) object with your key, and use it with your endpoint to create an [ApiClient]() object.
+Create a `main` function and add the following code to it to instantiate a client with your endpoint and key. You create a [CognitiveServicesAuthorizer](https://godoc.org/github.com/Azure/go-autorest/autorest#CognitiveServicesAuthorizer) object with your key, and use it with your endpoint to create a [Client](https://godoc.org/github.com/Azure/azure-sdk-for-go/services/cognitiveservices/v1.0/face#Client) object.
 
-```go
+[!code-go[](~/cognitive-services-quickstart-code/go/Face/FaceQuickstart.go?name=snippet_main_client)]
 
-```
 
 ## Example task 1