Runscope variables support

As I can see `postman` do not import `runscope` `Variables` [runscope doc](https://guide.blazemeter.com/hc/en-us/articles/360001858238)

Will this feature be integrated into `postman`?

Postman supports collection's variables and are also available for read and write from test script. So it could be used to store some response fragments, so use them in following calls