Insufficient example documentation

[mafiosso]

I suppose the examples and howtos given in README.md is very brief. For example I wonder how to get the same results as you achieve e.g.:

curl -X POST -d '{ "text": "Interoperability is the ability of making systems work together."}' http://localhost:7474/service/graphify/classify

gives me:

{"classes":[]}

Some data missing? Can you explain prerequisities less briefly? Thank you.