warn about CLI version (#75)

* announce deployment issue

* fix wording

* fix wording

README.md

@@ -96,11 +96,13 @@ needed assets are generated and placed in the output directory.)
 ## Deployment Usage
 
 Generated templates can be deployed using
-[the Azure CLI 1.0](https://github.com/Azure/azure-xplat-cli),
+[the Azure XPlat CLI (v0.10 only)](https://github.com/Azure/azure-xplat-cli/releases/tag/v0.10.0-May2016),
 [the Azure CLI 2.0](https://github.com/Azure/azure-cli) or
 [Powershell](https://github.com/Azure/azure-powershell).
 
-### Deploying with Azure CLI 1.0
+### Deploying with Azure XPlat CLI
+
+**NOTE:** DCOS deployments will fail with Azure XPlat CLI version > 10.0.  Use [Azure XPlat CLI 0.10.0](https://github.com/Azure/azure-xplat-cli/releases/tag/v0.10.0-May2016).  The fix for the Azure XPlat CLI fix is estimated to be Dec 2016.
 
 ```bash
 $ azure login