Moving docs from /vX to /docs; we will use branches for old versions.

docs/user-guide/walkthrough/pod-with-http-healthcheck.yaml

@@ -0,0 +1,20 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: pod-with-healthcheck
+spec:
+  containers:
+  - name: nginx
+    image: nginx
+    # defines the health checking
+    livenessProbe:
+      # an http probe
+      httpGet:
+        path: /_status/healthz
+        port: 80
+      # length of time to wait for a pod to initialize
+      # after pod startup, before applying health checking
+      initialDelaySeconds: 30
+      timeoutSeconds: 1
+    ports:
+    - containerPort: 80