add empty root layout (Phoenix 1.6)

Author: manuel-rubio

lib/kaffy.ex

@@ -25,6 +25,7 @@ defmodule Kaffy.Routes do
         plug(:fetch_flash)
         plug(:protect_from_forgery)
         plug(:put_secure_browser_headers)
+        plug(:put_root_layout, {KaffyWeb.LayoutView, :root})
       end
 
       scope unquote(scoped), KaffyWeb do

lib/kaffy/routes.ex

@@ -0,0 +1 @@
+<%= @inner_content %>