Document how to release to Artifactory

Description

A lot of developers, especially Java developers using Maven, need to release their code to Artifactory. Presumably we already support this, but need to document how it's done.

Proposal

Links / references

Documentation blurb

(Write the start of the documentation of this feature here, include:

1. Why should someone use it; what's the underlying problem.
2. What is the solution.
3. How does someone use this

During implementation, this can then be copied and used as a starter for the documentation.)