Added a few examples for `enum` methods.
Added a few examples for `enum` methods.

neo4jrb/neo4j,cheerfulstoic/neo4j,leviwilson/neo4j,leviwilson/neo4j,cheerfulstoic/neo4j,veetow/neo4j,veetow/neo4j,Xenapto/neo4j,neo4jrb/neo4j,Xenapto/neo4j