Add a line with kubectl port-forward instructions

[rakyll]

Output looks like:

...
namespace/ax unchanged
workerpool.ate.dev/ax-harness-workerpool created
actortemplate.ate.dev/ax-harness-template created
service/ax-eventlog-postgres unchanged
secret/ax-eventlog-postgres configured
statefulset.apps/ax-eventlog-postgres configured
replicaset.apps/ax-server created
configmap/ax-server-config created
[step]: wait for statefulset/ax-eventlog-postgres to be ready
waiting for postgres (timeout 5m)... done
[step]: wait for actortemplate/ax-harness-template to be Ready
waiting for golden snapshot (timeout 5m)... done

Forward the AX server by running the following command (optional)
kubectl port-forward -n ax rs/ax-server 8494:8494

Fixes #169.