Add a filename to the define call in the module header

[dhill-rmn]

Fixes amd warnings: Error: A module must not have more than one anonymous 'define' calls. when adding dependency of dist/wysihtml-toolbar with r.js

[dhill-rmn]

I hope that adding a named module does not cause any other issues? I shouldn't think so but naming the modules allows me to use r.js or any other amd optimizer to satisfy dependencies.
Please bump and release if all is well with this pull request, thanks