update mobile according to paddle-mobile repo (#957)

* update mobile according to paddle-mobile repo

* Update mobile_readme_en.md

doc/fluid/advanced_usage/deploy/mobile/mobile_readme.md

@@ -69,6 +69,8 @@ ONNX全称为“Open Neural Network Exchange”，即“开放的神经网络切
 
 [下载链接](http://mms-graph.bj.bcebos.com/paddle-mobile%2FmodelsAndImages.zip)
 
+- 测试输入数据可由本仓库下的脚本`tools/python/imagetools`生成。
+
 ## 交流与反馈
 - 欢迎您通过[Github Issues](https://github.com/PaddlePaddle/Paddle/issues)来提交问题、报告与建议
 - QQ群: 696965088 (Paddle-Mobile)

doc/fluid/advanced_usage/deploy/mobile/mobile_readme_en.md

@@ -67,6 +67,8 @@ At present，work in support of onnx is also under operation in Baidu. Related t
 Gif as following is the application output of online main part detection of simple search app
 ![ezgif-1-050a733dfb](http://otkwwi4x8.bkt.clouddn.com/2018-07-05-ezgif-1-050a733dfb.gif)-->
 
+- input data generated by tools from `tools/python/imagetools`.
+
 ## Communication
 - [Github Issues](https://github.com/PaddlePaddle/Paddle/issues): bug reports, feature requests, install issues, usage issues, etc.
 - QQ discussion group: 696965088 (Paddle-Mobile).