 - cleaned up GremlinJSPipeline constructor  - made .V and .E synchronous pipeline operations  - added async hasNext, next and toJSON
 - cleaned up GremlinJSPipeline constructor
 - made .V and .E synchronous pipeline operations
 - added async hasNext, next and toJSON

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