Add option to work with RethinkDB

[ericmdantas]

No description provided.

[ericmdantas]

For Node, use: https://github.com/neumino/rethinkdbdash.
For Go, use: https://github.com/dancannon/gorethink.

[ericmdantas]

Welp, rethinkDB is shutting down: https://rethinkdb.com/blog/rethinkdb-shutdown/.

[ericmdantas]

If you want the RethinkDB community to keep it going, you should join the research: https://docs.google.com/forms/d/e/1FAIpQLSc1yY2qy25viVc8MiM0XCsyMCpbalgzXrpT3MQAd_d3C1-jhA/viewform?c=0&w=1

[ericmdantas]

Looks like it's back on track: https://rethinkdb.com/blog/rethinkdb-joins-linux-foundation/.