Update README.md

Author: scotty-c

README.md

@@ -50,9 +50,9 @@ image to simplify installation and use.
 
 If you do not already have Docker installed on your workstation, install it [here](https://www.docker.com/community-edition)
 
-The kubetool docker image takes each of the parameters as environment variables. When run as follows it will output a `kubernetes.yaml` file in your current working directory:
+The kubetool docker image takes each of the parameters as environment variables. When run as follows it will output a `kubernetes.yaml` file in your current working directory. Please note the version of kubetool you use is tied to the version of the module on the Puppet Forge. So if you are using the module version 1.0.0 you would use `puppet/kubetool:1.0.0`:
 ```
-docker run --rm -v $(pwd):/mnt -e OS=debian -e VERSION=1.9.2 -e CONTAINER_RUNTIME=docker -e CNI_PROVIDER=weave -e FQDN=kubernetes -e IP=172.17.10.101 -e BOOTSTRAP_CONTROLLER_IP=172.17.10.101 -e ETCD_INITIAL_CLUSTER="etcd-kube-master=http://172.17.10.101:2380" -e ETCD_IP="%{::ipaddress_enp0s8}" -e KUBE_API_ADVERTISE_ADDRESS="%{::ipaddress_enp0s8}" -e INSTALL_DASHBOARD=true puppet/kubetool
+docker run --rm -v $(pwd):/mnt -e OS=debian -e VERSION=1.9.2 -e CONTAINER_RUNTIME=docker -e CNI_PROVIDER=weave -e FQDN=kubernetes -e IP=172.17.10.101 -e BOOTSTRAP_CONTROLLER_IP=172.17.10.101 -e ETCD_INITIAL_CLUSTER="etcd-kube-master=http://172.17.10.101:2380" -e ETCD_IP="%{::ipaddress_enp0s8}" -e KUBE_API_ADVERTISE_ADDRESS="%{::ipaddress_enp0s8}" -e INSTALL_DASHBOARD=true puppet/kubetool:{$module-version}
 ```
 
 The parameters are: