Code can't run, path issue

[williamLyh]

Hi, I find your code is quite hard to run because of some path issues. Maybe you could improve the accessibility? For example, in a few of shell scripts in modeling folder, there's path prefix step_gen, which doesn't exist in this repo. Also, in modeling/finetune_trainer.py, it's importing from modeling.utils, which should be from utils, as they are in the same directory.