migration and associations

completes #26

test/models/reviewer_to_quiz_test.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+require 'test_helper'
+
+class ReviewerToQuizTest < ActiveSupport::TestCase
+  test "the truth" do
+    assert ReviewerToQuiz
+  end
+end