~/.vimrc: use goyo for focus mode.

.vimrc

@@ -31,6 +31,8 @@ if isdirectory($HOME . '/.vim/bundle/vundle')
	Bundle 'guns/vim-clojure-static'
	Bundle 'kchmck/vim-coffee-script'
	Bundle 'junegunn/goyo.vim'
endif
" Have syntax highlighting and non-vi features
@@ -95,27 +97,6 @@ function! g:setTextWidthInComments()
endfunction
"autocmd CursorMoved * :call g:setTextWidthInComments()
" via <http://paulrouget.com/e/vimdarkroom>
function! ToggleFocusMode()
  if (&foldcolumn != 12)
    set laststatus=0
    set numberwidth=10
    set foldcolumn=12
    set noruler
    set showtabline=0
    hi FoldColumn ctermbg=none
    hi LineNr ctermfg=0 ctermbg=none
  else
    set laststatus=2
    set numberwidth=4
    set foldcolumn=0
    set ruler
    set showtabline=1
    colorscheme solarized
  endif
endfunc
nnoremap F :call ToggleFocusMode()<cr>
au BufNewFile,BufRead *.{hs,lhs} set comments=:--,sr:{-,ex:-}
au BufNewFile,BufRead *.rb set comments=:#,s:=begin,e:=end
au BufNewFile,BufRead *.{opa,trx} set filetype=opa shiftwidth=2 tabstop=2 expandtab