Neo4j - logstash-output-neo4j

I found and installed this plugin but can not find the documentation on it. Can anyone point me to how to use it ...
Basically I want to store node text data to be searchable in ES but use neo4j as a graph database for this ... Thus need an easy way to dump data to neo4j.

I haven't used this plugin (nor Neo4j), but see its code for the documentation that does exist. The only available configuration option is path.