Add new plugin

[cubiczx]

How do I add a new plugin? http://imperavi.com/redactor/examples/buttons-sup-and-sub/

[cubiczx]

Finally i use ckeditor with setting:

_ck_editor_toolbar = [
            [ 'Bold', 'Italic', 'Subscript', 'Superscript', 'SpecialChar', '-',
            'RemoveFormat', '-',
            'Cut', 'Copy', 'PasteText', '-',
            'Undo', 'Redo', '-',
            'Find', 'Replace', 'SelectAll', '-',
            'Maximize']
        ];