MacOS fix

[t-kimber]

Thanks for the interesting SMILES embedding !

Taken from the README.md file, the installation doesn't seem to be supported for MacOS, in particular the following command

pip install --ignore-installed --upgrade https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.10.0-cp36-cp36m-linux_x86_64.whl

A possible fix is

conda install -c conda-forge tensorflow==1.10.0

Another small note:

In the Inference Module, when instantiating the class ( inference_model = InferenceModel() ) , in my case, the default_model folder has to be moved manually to cddd/data/ .