kubernetes tutorial update

doc/ext/ztkube.md

@@ -9,9 +9,9 @@ This is a quick tutorial for setting up a Kubernetes deployment which can self-a
 
 ## Preliminary tasks
 
-**Step 1: Go to [my.zerotier.com](https://my.zerotier.com) and generate an API key. This key will be used by ZeroTier to automatically authorize new instances of your VMs to join your deployment network during replication.**a
+**Step 1: Go to [my.zerotier.com](https://my.zerotier.com) and generate an API key. This key will be used by ZeroTier to automatically authorize new instances of your VMs to join your deployment network during replication.**
 
-**Step 2: Create a new `private` network. Take note of the network ID: `nwid`**
+**Step 2: Create a new `private` network. Take note of the network ID, henceforth: `nwid`**
 
 **Step 3: Follow the instructions from the [hellonode](ttp://kubernetes.io/docs/hellonode/) tutorial and set up your development system (install Google Cloud SDK).**
 
@@ -24,17 +24,8 @@ This is a quick tutorial for setting up a Kubernetes deployment which can self-a
  - `mkdir ztkube`
 
 Add the following files to the `ztkube` directory. These files will be compiled into the Docker image.
-
-
-Create an empty file to specify the private deployment network you created in *Step 2*:
- - `<nwid>.conf`
-
-
-```
-./zerotier 
-zerotier-cli join $(NWID).conf
-zerotier-cli net-auth $(NWID) $(DEVID)
-```
+ 
+ - Create an empty `<nwid>.conf` file to specify the private deployment network you created in *Step 2*:
 
  - The CLI tool config file `.zerotierCliSettings` should contain your API keys to authorize new devices on your network. In this example the default controller is hosted by us at [my.zerotier.com](https://my.zerotier.com). Alternatively, you can host your own network controller but you'll need to modify the CLI config file accordingly.
 
@@ -73,7 +64,13 @@ COPY .zerotierCliSettings <settings path>?>
 CMD node server.js
 ```
 
- - The `entrypoint.sh` script will start the ZeroTier service in the VM, attempt to join your deployment network and automatically authorize the new VM if your network is set to private.
+ - The `entrypoint.sh` script will start the ZeroTier service in the VM, attempt to join your deployment network and automatically authorize the new VM if your network is set to private:
+
+```
+./zerotier 
+zerotier-cli join $(NWID).conf
+zerotier-cli net-auth $(NWID) $(DEVID)
+```
 
 **Step 5: Lastly, build the image:**
 
@@ -81,11 +78,12 @@ CMD node server.js
 
 
 
-**Step 6: Push the docker image to your *Container Registry**
+**Step 6: Push the docker image to your *Container Registry***
 
 `gcloud docker push gcr.io/$PROJECT_ID/hello-node:v1`
 
 
+## Deploy!
 
 **Step 7: Create Kubernetes Cluster**
 
@@ -107,4 +105,6 @@ CMD node server.js
 
 `kubectl scale deployment hello-node --replicas=4`
 
-Now, after a minute or so you can use `zerotier-cli net-members <nwid>` to show all of your VM instances on your ZeroTier deployment network. If you haven't [configured your local CLI](), you can simply log into [my.zerotier.com](https://my.zerotier.com), go to *Networks -> <nwid>*.
+## Verify
+
+Now, after a minute or so you can use `zerotier-cli net-members <nwid>` to show all of your VM instances on your ZeroTier deployment network. If you haven't [configured your local CLI](), you can simply log into [my.zerotier.com](https://my.zerotier.com), go to *Networks -> nwid*.