modernizing

lib/ex_mine/application.ex

@@ -2,15 +2,13 @@ defmodule ExMine.Application do
   use Application
 
   def start(_type, _args) do
-    import Supervisor.Spec
-
     children = [
-      worker(ExMine.Server, [])
+      {ExMine.Server, []}
     ]
 
     options = [
       name: ExMine.Supervisor,
-      strategy: :simple_one_for_one,
+      strategy: :simple_one_for_one
     ]
 
     Supervisor.start_link(children, options)