Scripts and readme (#258)

* Avoid race condition when deploying quickstart example

The namespace and CRD creation must happen before any dependent objects
are created.  So we can put these in a separate directory (manifest/setup)
so they can be created before the other objects.

Some minor updates to the README and added a couple of scripts
for the quickstarts

Update travis script to avoid race condition

Signed-off-by: Paul Gier <pgier@redhat.com>

* simplify the example quickstart script and improve readme

Signed-off-by: Paul Gier <pgier@redhat.com>

* increase minikube memory to 6g for quickstart example

scripts/minikube-start.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+minikube delete
+minikube addons disable metrics-server
+minikube start \
+    --kubernetes-version=v1.16.0 \
+    --memory=6g \
+    --bootstrapper=kubeadm \
+    --extra-config=kubelet.authentication-token-webhook=true \
+    --extra-config=kubelet.authorization-mode=Webhook \
+    --extra-config=scheduler.address=0.0.0.0 \
+    --extra-config=controller-manager.address=0.0.0.0