Initial release

Introducing rex-ogm!
An Object Graph Mapper ("OGM") which dramatically simplifies the
creation, storage, retrieval and removal of vertices and edges within a
graph database running Rexster.

This package makes it easier to talk to the Graph database via the
Rexster RESTful API from NodeJS. It is still very much a work in
progress - this version only covers the main Vertex/Edge operations.
I've tried to keep it as intuitive as possible and adopt some of the
styles/conventions that other ODMs and ORMs utilise

Originally this was built as a library within another project but it
continued to grow to the point where it had enough functionality that it
was worth packing up and releasing.