Add version to API

[pontusmelke]

Moved neo4j to neo4j.v1 in order to facilitate API migrations in
future versions.

[jakewins]

IMO, we should keep the neo4j root namespace, and introduce a v1 namespace inside it instead:

require('neo4j.v1');
import 'neo4j.v1';

[jakewins]

This should be possible by adding a v1 folder inside the src dir, and exposing that v1 folder though the neo4j.js file exports.

[pontusmelke]

@jakewins any better, I think it is require('neo4j').v1; but otherwise I think it is what you meant?

[jakewins]

+1