condense kustomize instructions to one line

README.md

@@ -197,15 +197,8 @@ Big Bang follows a [GitOps](https://www.weave.works/blog/what-is-gitops-really)
 
    ```shell
    # Flux is used to sync Git with the the cluster configuration
-   # cd out of <your repo> and clone bigbang repo
-   cd ../../
-   git clone https://repo1.dso.mil/platform-one/big-bang/bigbang.git
-   cd bigbang
-   FLUX_KUSTOMIZATION=base/flux
-
-   # Deploy flux
-   kustomize build "$FLUX_KUSTOMIZATION" | kubectl apply -f -
-   
+   kustomize build https://repo1.dso.mil/platform-one/big-bang/bigbang.git//base/flux?ref=master | kubectl apply -f -
+
    # Wait for flux to complete
    kubectl get deploy -o name -n flux-system | xargs -n1 -t kubectl rollout status -n flux-system
    ```