authentication with persistence working

priv/repo/migrations/20180101200459_create_user.exs

@@ -0,0 +1,14 @@
+defmodule MyApp.Repo.Migrations.CreateUser do
+  use Ecto.Migration
+
+  def change do
+    create table(:user) do
+      add :battle_net_id, :integer
+      add :battletag, :string
+
+      timestamps()
+    end
+
+    create unique_index(:user, [:battle_net_id])
+  end
+end