Oh!! Thanks!

I think it's good idea describe how beautify in visual mode.

But we have special functions for this case [RangeJsBeautify](https://github.com/maksimr/vim-jsbeautify/blob/master/plugin/beautifier.vim#L463), RangeHtmlBeautify and RangeCSSBeautify :)

```vim
    autocmd FileType javascript vnoremap <buffer>  <c-f> :call RangeJsBeautify()<cr>
    autocmd FileType html vnoremap <buffer> <c-f> :call RangeHtmlBeautify()<cr>
    autocmd FileType css vnoremap <buffer> <c-f> :call RangeCSSBeautify()<cr>
```