Fix: out of date API usage
Fix: out of date API usage

`Neo4j::Transaction.run` no longer works (at least generally) in the neo4j gem. `Neo4j::ActiveBase.run_transaction` does. I'm not sure if `Neo4j::ActiveBase` is present in neo4j-core, however. Maybe in core `Neo4j::Transaction` is still correct?
leviwilson/neo4j,leviwilson/neo4j,neo4jrb/neo4j,cheerfulstoic/neo4j,cheerfulstoic/neo4j,neo4jrb/neo4j