Currently Shinobi can't do that. Adding it would be simple in perspective. This is also an interesting thought, so ill move this over to the Suggestions section.
though the way Shinobi works it cannot be burned on to the stream. You cannot see this information unless you are viewing with a Shinobi interface of some kind, like the dashboard or embed window.
It's even possible to add on hover effects for such information if you want.
Also if i were to go about doing this i would not use a text file. I would make it so an API request would display this information. Like a GET or POST method.
Thanks for the idea! I will totally be looking to add this in.