Bug in run_glue 
Hi
I am getting this error when running run_glue.py 

ImportError: cannot import name 'TrainingArguments' from 'transformers' (/idiap/user/rkarimi/libs/anaconda3/envs/iborn/lib/python3.7/site-packages/transformers/__init__.py)

Traceback (most recent call last):
  File "run_glue.py", line 34, in <module>
    from transformers import (
ImportError: cannot import name 'HfArgumentParser' from 'transformers' (/idiap/user/rkarimi/libs/anaconda3/envs/iborn/lib/python3.7/site-packages/transformers/__init__.py)

To fix I searched in the repo on how you use the hf_argparser, I modified it as below:
from transformers.hf_argparser import HfArgumentParser

again, getting  the error: 
Traceback (most recent call last):
  File "run_glue.py", line 44, in <module>
    from transformers.hf_argparser import HfArgumentParser
ModuleNotFoundError: No module named 'transformers.hf_argparser'

however, this is how you call it in the tests but this does not work. Seems to me that things have been changed but the codes are not updated.  thanks 
You need to install from source as specified in the README.