Update readme - add note for kvm snaps and details on deletion of snaps

Author: Pearl1594

README.md

@@ -123,6 +123,9 @@ make container
 
 
 ## Volume Snapshots
+
+**NOTE:** To create volume snapshots in KVM, make sure to set the `kvm.snapshot.enabled` global setting to true and restart the Management Server
+
 For Volume snapshots to be created, the following configurations need to be applied:
 
 ```
@@ -167,6 +170,14 @@ spec:
         claimName: pvc-from-snapshot
 ```
 
+
+To delete a volume snapshot
+One can simlpy delete the volume snapshot created in kubernetes using
+
+```
+kubectl delete volumesnapshot snapshot-1       # here, snapshot-1 is the name of the snapshot created
+```
+
 ### What happens when you restore a volume from a snapshot
 * The CSI external-provisioner (a container in the cloudstack-csi-controller pod) sees the new PVC and notices it references a snapshot
 * The CSI driver's `CreateVolume` method is called with a `VolumeContentSource` that contains the snapshot ID