Add an `opc org edit` command.

Do you mean like this:

```
 if original_org == edited_org
   ui.msg("Organization unchanged, not saving.")
   exit 
end

@chef_rest = Chef::REST.new(Chef::Config[:chef_server_root])
ui.msg edited_org
result = @chef_rest.put_rest("organizations/#{org_name}", edited_org)
ui.msg("Saved #{org_name}.")
```