2. Add inference script
3. Add load model script
4. Add some functions into ctc_reader

1. Move all network defining to 'crnn_ctc_model.py'
2. Add initilizer for some layers
3. Rename 'fluid/ocr' to 'fluid/ocr_recognition'
4. Remove copyright
5. Rename some functions

add ctc reader

Refactor model conf: add profiling, parallel running, model saving etc

Add option to suppress the complaints from sub process.

Augmentation should compute frame_dim

Change to parallel reader

reader.

etc.