Add discussion of different ways to format JSON

[smalers]

In order to produce more compact or readable JSON, the following discussion of newline-delimited JSON may be of interest. I'm not sure how to incorporate - maybe needs to go into general JSON learning resources.

http://jsonlines.org/ 
https://en.wikipedia.org/wiki/JSON_streaming

https://github.com/FasterXML/jackson-future-ideas/issues/33