message: Fix deprecated function
diff: @@ -160,7 +160,7 @@ def main(_):
  evaluation_step = tf.reduce_mean(tf.cast(correct_prediction, tf.float32))
  tf.summary.scalar('accuracy', evaluation_step)
  - global_step = tf.contrib.framework.get_or_create_global_step()
  + global_step = tf.train.get_or_create_global_step()
  increment_global_step = tf.assign(global_step, global_step + 1)
  saver = tf.train.Saver(tf.global_variables())
  