message: Consistentify 01_super_simple example
diff: @@ -29,12 +29,12 @@ impl event::EventHandler for MainState {
  let circle = graphics::Mesh::new_circle(
  ctx,
  graphics::DrawMode::fill(),
  - na::Point2::new(self.pos_x, 380.0),
  + na::Point2::new(0.0, 0.0),
  100.0,
  2.0,
  graphics::WHITE,
  )?;
  - graphics::draw(ctx, &circle, (na::Point2::new(0.0, 0.0),))?;
  + graphics::draw(ctx, &circle, (na::Point2::new(self.pos_x, 380.0),))?;
  graphics::present(ctx)?;
  Ok(())
  