fix executable output escape ANSI escape codes in bin_version/0 (#134)

Author: jinjaeyeon

lib/tailwind.ex

@@ -170,6 +170,7 @@ defmodule Tailwind do
 
     with true <- File.exists?(path),
          {out, 0} <- System.cmd(path, ["--help"]),
+         out <- Regex.replace(~r/(\x9B|\x1B\[)[0-?]*[ -\/]*[@-~]/, out, ""),
          [vsn] <- Regex.run(~r/tailwindcss v([^\s]+)/, out, capture: :all_but_first) do
       {:ok, vsn}
     else