Your config files were never really JSON, as Microsoft planned it that way.
If you're building a RESTful Web service, you can provide both guidance and control around the JSON messages your service works with by replacing documentation with JSON Schemas. Say what you want ...
At any point, you can share the file or the current value alone, and, this being a modern iOS app, you can tap URLs, copy text, or drag and drop content out of Jayson. You can also tap & hold items to ...