Adding an icon. Per Tim Bray's now deprecated www.textuality.com/bonnie site he attribute the name to Bonnie Raitt, and features this logo.  Bonnie++ which this charm deploys is developed from Tim Bray's Bonnie, thus this logo seemed appropriate and I could not find a Bonnie++ icon.
Update placement of charm icon to be in the guidlines.
[a.rosales] Add icon.