No module named deepface - FACESMILE  #17

hi,
I tried to run the facesmile demo from the Deep face
1.I changed the filepath and image names in the demo.py file
2.Then run the demo using
python demo.py
It shows error:
File "demo.py", line 8, in
from deepface import face_verify
ImportError: No module named deepface

How to install the deepface module?

Thanks,
Regards
CIBIN