demo example does not work

[dobryakov]

As described in the readme:

pip install requirements.txt
cd demo
python collaborative_filtering_v1.py 

It does not work, because:

1. pip install -r requirements.txt # do not forget "-r"
2. ModuleNotFoundError: No module named 'keras_recommender' # this module is located in the parent directory, not the demo directory.

[tatarsky-v]

@dobryakov, about ModuleNotFoundError. Hot fix solution is copy keras_recommender/ to demo/ with
cp -R keras_recommender demo

[dobryakov]

Thanks! ln -s also could work.