move morse to seperate module

morse/lib/morse.ex

@@ -0,0 +1,13 @@
+defmodule Morse do
+  @moduledoc """
+  Functions to control the signal lamp connected with GPIO.
+  """
+
+  @doc """
+  Takes a string composed of dots and dashes, and signals them with the
+  signal lamp.
+  """
+  def signal(msg) do
+    IO.puts(msg)
+  end
+end