Aliases for `fzf#run` & `fzf#wrap` fns

[ghost]

Creates two simple shim functions to alllow plugins to use fzf#run and/or fzf#wrap directly.

[runiq]

These functions need to be in autoload/fzf.vim, not autoload/fzf/vim.vim. If you do that, they work fine. (Tested with LanguageClient-neovim.)