Import error in scaffold script

[archinksagar]

I get the following error when I run the scaffold script.

python scripts/scaffold.py
Traceback (most recent call last):
File "/moto/scripts/scaffold.py", line 40, in
from moto.core import BaseBackend
ImportError: cannot import name 'BaseBackend' from 'moto.core' (/moto/moto/core/init.py)

[bblommers]

Thanks @archinksagar - I've raised a PR with a fix. Let me know if you run into any other issues after that's merged