Use version 0.28 of rubocop
Use version 0.28 of rubocop

Version 0.29+ isn't displaying properly in syntastic and it's unclear
what the problem is and there are no open issues on either project.
Version 0.28 works as expected, so just sticking with that for now in
gem install list.

alphabetum/dotfiles,alphabetum/dotfiles,alphabetum/dotfiles,alphabetum/dotfiles