Updated README.md to include Mac kubectl install

Added instructions to README.md for Mac install of kubectl

README.md

@@ -14,7 +14,21 @@ Start by cloning this repo to your local machine and work in that dir.
 You need the kubectl command to control k8s.  Install it according to your
 platform requirements.
 
-On Ubuntu you can `sudo snap install kubectl`
+> [Note from](https://kubernetes.io/docs/tasks/tools/install-kubectl-macos/): You must use a kubectl version that is within one minor version difference of your cluster. For example, a v1.27 client can communicate with v1.26, v1.27, and v1.28 control planes. Using the latest compatible version of kubectl helps avoid unforeseen issues.
+
+We are currently on version `1.24`
+
+- On Ubuntu you can `sudo snap install kubectl` (How to install specific version of a `snap`?)
+- Install v1.24 [kubectl on Mac w/ Apple Silicon](https://kubernetes.io/docs/tasks/tools/install-kubectl-macos/). For Intel Macs, replace `arch="arm64"` with `arch="amd64"`
+
+  ```shell
+  ver="1.24"
+  arch="arm64"
+  curl -LO "https://dl.k8s.io/release/v${ver}.0/bin/darwin/${arch}/kubectl"
+  chmod +x kubectl
+  curl -LO "https://dl.k8s.io/release/v${ver}.0/bin/darwin/${arch}/kubectl.sha256"
+  echo "$(cat kubectl.sha256)  kubectl" | shasum -a 256 --check
+  ```
 
 ## Copy the example kube config