Merge pull request #18 from mspnp/mike/aks-visio-link

Add link to Visio file

docs/reference-architectures/microservices/aks.md

@@ -17,6 +17,8 @@ This reference architectures shows a microservices application deployed to Azure
 
 ![AKS reference architecture](./_images/aks.png)
 
+*Download a [Visio file][visio-download] of this architecture.*
+
 ## Architecture
 
 The architecture consists of the following components.
@@ -266,4 +268,5 @@ For specific recommendations and best practices, see [CI/CD for microservices on
 To deploy the reference implementation for this architecture, follow the steps in the [GitHub repo][ri-deploy].
 
 [ri]: https://github.com/mspnp/microservices-reference-implementation
-[ri-deploy]: https://github.com/mspnp/microservices-reference-implementation/blob/master/deployment.md
+[ri-deploy]: https://github.com/mspnp/microservices-reference-implementation/blob/master/deployment.md
+[visio-download]: https://archcenter.blob.core.windows.net/cdn/aks-reference-architecture.vsdx