Add instructions and/or scripts for supporting OSX

[margamanterola]

During the tutorial we had several attendees try to follow along in OSX. This should be possible but we would need to download the executables for Mac instead of Linux.

[adomenech73]

This worked for me:

# Clone the minikube repo
git clone https://github.com/kinvolk/minikube.git -b alban/bpf-workshop --single-branch
cd minikube
# build minikube
make
# Get the ISO image
wget https://eleven.dev.kinvolk.io/u/alban/cloud-native-bpf-workshop/minikube.iso -O out/minikube.iso
cd out
# Install minikube (Docker driver by default)
# https://minikube.sigs.k8s.io/docs/drivers/
./minikube start --driver=hyperkit --iso-url=file://$(pwd)/minikube.iso
# Remove minikube
./minikube delete

Hope it helps