update data source and remove useless code

Fix typo README_cn.md

fix the bug of setup.sh

update grad_clip to 1.8

fix the bug in data.py

fix the text_data dim to fit the dim check in paddle develop version

update README.md and README_cn.md

Update Readme

Update README.md added missing yum install package

Python command to normalize the data have some typo errors.

Update README.md added missing yum install package `python-devel` which is required by python package `resampy`.

change the default configuration in infer.py and test.py

Change StaticRNN to fluid.layers.rnn

update README

upadte README.md and README_cn.md

Update deepspeech to fluid api

Update master

Update README_cn.md

Update README.md