From c58cf4b34836ac1f0be74c0bf8faba687755e1a3 Mon Sep 17 00:00:00 2001
From: zhangxiaoli73 <380761639@qq.com>
Date: Thu, 19 Oct 2017 14:24:36 +0800
Subject: [PATCH] add ptb model example (#1672)

* add ptb model example

* meet review