Another review updates

README.md

@@ -21,9 +21,11 @@ Various external-provisioner releases come with different alpha / beta features.
 
 Following table reflects the head of this branch.
 
-| Feature  | Status | Description                                                                                |
-| -------- | ------ | ------------------------------------------------------------------------------------------ |
-| Topology | Beta   | [Topology aware dynamic provisioning](https://kubernetes-csi.github.io/docs/topology.html) |
+| Feature  | Status | Default | Min. K8s version | Description                                                                                |
+| -------- | ------ | ------- | ---------------- | ------------------------------------------------------------------------------------------ |
+| Topology | Beta   | Off     | 1.14             | [Topology aware dynamic provisioning](https://kubernetes-csi.github.io/docs/topology.html) |
+
+All other external-provisioner features and the external-provisioner itself is considered GA and fully supported.
 
 ## Usage
 
@@ -57,7 +59,7 @@ Note that the external-provisioner does not scale with more replicas. Only one e
 
 * `--deletion-retry-count <num>`: Sets number of retries of failed deletion of a single volume. The external-provisioner will give up deletion of the volume after given number of retries. It should be used only with special CSI drivers whose deletion of volumes is extremely slow (e.g. hours or days) or expensive so the external-provisioner does not waste resources. Set to `0` to retry forever (which is also the default value).
 
-* `--feature-gates <gates>`: Enables or disables alpha (disabled by default) or beta features (enabled by default). See [list of features](#feature-status) or `--help` output for list of recognized features.
+* `--feature-gates <gates>`: A set of comma separated `<feature-name>=<true|false>` pairs that describe feature gates for alpha/experimental features. See [list of features](#feature-status) or `--help` output for list of recognized features. Example: `--feature-gates Topology=true`.
 
 * `--kubeconfig <path>`: Path to Kubernetes client configuration that the external-provisioner uses to connect to Kubernetes API server. When omitted, default token provided by Kubernetes will be used. This option is useful only when the external-provisioner does not run as a Kubernetes pod, e.g. for debugging. Either this or `--master` needs to be set if the external-provisioner is being run out of cluster.