Having post-credits scenes is a relatively new trend, debuting with the first Iron Man film "“ in fact, it was Marvel that did it the first time, in order to raise the expectations for its following films. And they did a bang up job with these post-credits scenes, though they did have near misses at times (fun ones, but still).
DC didn't follow this trend for the Dark Knight Trilogy though they did show Sinestro becoming the feared Yellow Lantern in the 2011's Green Lantern. Will they include post-credits scenes in the future movies? The safest bet is that they will "“ Man of Steel was supposed to have one, after all.
Post-credits scene leading to the Justice League

Marketed at first as a Man of Steel sequel, Batman v Superman can now be considered a Justice League prequel. Which is fine by us "“ but can they tease this in a post-credits scene?
Zack Snyder can surely do it. The main superheroes which will form the Justice League have already been cast, with Green Lantern being the only one to be announced. A quick scene at the end of Batman v Superman could show Batman, Superman and Wonder Woman uniting for the first time on the silver screens with Aquaman, Flash, and Cyborg.
But they needn't actually be all in the same place "“ maybe the post-credits scene will hint at the main baddie of the first Justice League film, with the heroes being made aware of this new threat no matter where they are found.
On the next page, announcing the last Justice League member!

