Documentation for Presto on Spark

[rb2001]

Need to add documentation on how to use Presto on Spark to showcase good batch ingestion and data processing.

(Potential) Documentation requirements:

• easy to follow tutorial on using POS for batch processing using sample data
• how to get started guide with Presto on Spark

[wanglinsong]

A working docker-compose deployment will be good, together with some scripts to run queries.