GraphSONInputForrmat now support modes
configure via "faunus.graphson.mode"
GraphSONInputForrmat now support modes
configure via "faunus.graphson.mode"

Tested and worked for upgrading data from Titan 0.3.x to 0.4.x
using GraphSON extended via Faunus 0.3.x to generate output using "g._()"
and use Faunus 0.4.x to process the graphson generated by 0.3.x as the input.