Support setting a additional text

[Kaushalya Pradeep]

Thank you very much for the plugin, very useful.

I have a request, currently things look like this

/*
 *   Copyright (c) ${year} ${CompanyName}
 *   All rights reserved.
 */

instead also support adding some extra text with a setting option

ex:

/*
 *   Copyright (c) ${year} ${CompanyName}
 *   All rights reserved.
 *   ${extraNote}
 */

"copyrighter.extraNote" : " extra note here"

[Max Wilkinson]

Great idea, thank you! I will work to get this integrated as soon as possible.

[Kaushalya Pradeep]

Thanks for doing this!