install kubernetes.io on ubuntu code example

Example 1: kubectl install on ubuntu

curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl"

Example 2: install kubernetes on ubuntu

sudo apt-add-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main"