HackerWins/summernote — pull request #255 by jginfo (2014-02-22 16:18:38+00:00)
Title:  Add buttons toolbar sup, 'sub' , 'strik' part 2

1) Add buttons toolbar 'superscript' and 'subscript'
2) Finalize button toolbar 'strikethrough'

ex: ['font', ['bold', 'italic', 'underline', 'strikethrough', 'superscript', 'subscript', 'clear']],