Encoding document to json with JSON_UNESCAPED_UNICODE

[rauanmayemir]

May I suggest to use additional options JSON_UNESCAPED_UNICODE and JSON_PRETTY_PRINT for content encoding? (the latter is not critical though)

Both options mostly are helpful for those who often play around with direct curl/browser queries

JSON_UNESCAPED_UNICODE is useful for non-latin texts, otherwise you end up with something like

"_source" : {"title":"\u041e\u0411\u0429\u0415\u0421\u0422\u0412\u0415\u041d\u041d\u041e\u0415"}

JSON_PRETTY_PRINT - readable tabbed json.

Case is similar to #464 and is pretty trivial to implement.
I can provide separate pull-request.

[ruflin]

Can you open a pull request with some tests and perhaps you can merge the changes from #464 in as well as they were never merged?

[rauanmayemir]

Sure, I'll do it.

Btw, JSON_PRETTY_PRINT seems to cause some troubles in http transport. I assume it's because of new lines in command, so i rolled back and leaved only unicode stuff.

[ruflin]

Ok. Let me know when you open the pull request.

[ruflin]

Closed with merge of pull request #560