Allow g.v to handle v[] in vertex IDs
Allow g.v to handle v[] in vertex IDs

Since one often gets a vertex ID in the form 'v[8]' instead of the '8'
that one might expect, it makes sense that gremlin-node should be able
to handle IDs in that form. With this patch, g.v() can!

inolen/gremlin-node,RedSeal-co/gremlin-v3,RedSeal-co/gremlin-v3