Problem adding FORMAT plugin

Hi,

I am using CKEditor plugin for Wordpress (Plugin Version 4.0.0.1, Editor Version 4.0).

I want to add div elements with specific classes to format dropdown menu - so i want to add FORMAT addon (and all dependencies) to my CKEditor, but something is not right.

I tried adding 

config.extraPlugins = 'panel,button,listblock,floatpanel,richcombo,format';

and

CKEDITOR.plugins.addExternal( 'format', '/plugins/format/' );
CKEDITOR.plugins.addExternal( 'richcombo', '/plugins/richcombo/' );
CKEDITOR.plugins.addExternal( 'floatpanel', '/plugins/floatpanel/' );
CKEDITOR.plugins.addExternal( 'listblock', '/plugins/listblock/' );
CKEDITOR.plugins.addExternal( 'button', '/plugins/button/' );
CKEDITOR.plugins.addExternal( 'panel', '/plugins/panel/' );

to my config.js file, but it doesnt work.

Also, I noticed that i have both "/plugins" and "/ckeditor/plugins" directories in my ckeditor-for-wordpress folder. Which one should I use?