How to add text to photos in the Photos App on El Capitan
So I was wondering if anyone has managed to find an extensions app to use with Photos (on El Capitan) that will allow the ability to add text onto photos (such as titles, comments, etc). I have seen the App "Be Funky" on the App store, that while it allows Photos extensions, does not explicitly mention that it can add text. I'd appreciate any insights anyone has! Naturally I know of the ability to export photos and then use any 3rd party tools, but I was hoping for somethings inside of Photos to use.
iMac, OS X El Capitan (10.11.1)