Refactor the whole data preprocessor part for DeepSpeech2.#91

Merged

xinghai-sun merged 3 commits intoPaddlePaddle:developfrom xinghai-sun:ds2_refactor_data

Jun 14, 2017

+1,280-512

Commits on Jun 12, 2017

Refactor whole data preprocessor for DS2 (re-design classes, re-organize dir, add augmentaion interfaces etc.).
xinghai-sun
committed

Commits on Jun 13, 2017