Update utils.ex

Author: josevalim

lib/utils.ex

@@ -1,13 +1,16 @@
 defmodule AxonDatasets.Utils do
+  @moduledoc false
+  require Logger
+
   def unzip_cache_or_download(base_url, zip, data_path) do
     path = Path.join(data_path, zip)
 
     data =
       if File.exists?(path) do
-        IO.puts("Using #{zip} from #{data_path}\n")
+        Logger.debug("Using #{zip} from #{data_path}\n")
         File.read!(path)
       else
-        IO.puts("Fetching #{zip} from #{base_url}\n")
+        Logger.debug("Fetching #{zip} from #{base_url}\n")
         :inets.start()
         :ssl.start()