support for oracle db

[chriddyp]

I've been following some threads in https://github.com/oracle/node-oracledb for the last year or two, and it looks like native binaries are finally available! oracle/node-oracledb#18 (comment). As far as I recall, this was one of the blockers for supporting oracledb in this client.

[chriddyp]

If anyone in the community would like to take this on, see #266

[n-riesco]

See:

• https://apex.oracle.com/
• https://github.com/oracle/node-oracledb/blob/master/package/README.md
• https://hub.docker.com/r/wnameless/oracle-xe-11g/
• http://www.oracle.com/technetwork/database/database-technologies/express-edition/overview/index.html