Update spec

spec/helpers/application_helper_spec.rb

@@ -95,9 +95,9 @@ describe ApplicationHelper do
     end
     it 'should call gravatar_icon when no User exists with the given email' do
-      expect(helper).to receive(:gravatar_icon).with('foo@example.com', 20)
-      helper.avatar_icon('foo@example.com', 20)
+      expect(helper).to receive(:gravatar_icon).with('foo@example.com', 20, 2)
+      helper.avatar_icon('foo@example.com', 20, 2)
     end
   end