Replace bakeware with burrito

Bakeware has been deprecated

lib/find_old_mp3s.ex

@@ -1,17 +1,11 @@
-defmodule FindOldMp3s.Main do
+defmodule FindOldMp3s.Application do
   @moduledoc """
   Main module to run when invoking the binary
   """
 
-  use Bakeware.Script
-
-  @impl Bakeware.Script
-  def main(args) do
-    path = args
-      |> Path.expand
-
-    Path.wildcard(path) |> Enum.each(fn path -> IO.puts(path) end)
-
-    0
+  def start(_, _) do
+    args = Burrito.Util.Args.get_arguments()
+    |> parse_options
+    |> execute
   end
 end