adds warning message to default for k8s version

Signed-off-by: Mritunjay Sharma <mritunjaysharma394@gmail.com>

pkg/action/action.go

@@ -113,6 +113,7 @@ func (cfg *Configuration) renderResources(ch *chart.Chart, values chartutil.Valu
 
 	if ch.Metadata.KubeVersion != "" {
 		if !chartutil.IsCompatibleRange(ch.Metadata.KubeVersion, caps.KubeVersion.String()) {
+			fmt.Fprintf(b, "WARNING: no --kube-version parameter passed, defaulting to %s\n", caps.KubeVersion.String())
 			return hs, b, "", errors.Errorf("chart requires kubeVersion: %s which is incompatible with Kubernetes %s", ch.Metadata.KubeVersion, caps.KubeVersion.String())
 		}
 	}