Hardcoded elixir build folder name

[maximkou]

Hi! Thank you for good tool!

I'm use this in one project and find one wrong moment: I do not change elixir versioning build folder name, because in

cdn/src/Vinelab/Cdn/CdnFacade.php

Line 95 in c8ef553

public function elixir($path)

is hardcoded.

Original elixir accept build dir name as argument, see https://github.com/laravel/framework/blob/5.3/src/Illuminate/Foundation/helpers.php#L387

You planned fix this?