Add feed
This method is used to follow feeds.
Request:
https://www.inoreader.com/reader/api/0/subscription/quickadd
Request parameters:
- quickadd- feedId to follow to, e.g.- feed/http://feeds.arstechnica.com/arstechnica/science
Response:
Unlike most other POST methods, this one returns a JSON object:
{
  query: "feed/http://feeds.arstechnica.com/arstechnica/science",
  numResults: 1,
  streamId: "feed/http://arstechnica.com/",
  streamName: "Ars Technica » Scientific Method"
}numResults will be 0 if the feed is not added for some reason. It will be 1 when feed is added, even if the user is already subscribed.