The movie is out since the 28th in Asia and Europe at least, the info he/she posted is correct, I left forgetting about the post credits scenes the movies usually have so I didn't see the post battle thing, but I've seen people saying it happened in the post credits portion.
You know you can't do that, right? It's plagiarism: taking the work of other people, that they specifically wrote for (in this instance) that wiki, and putting it somewhere else without their knowledge. If you're going to cooperate with this wiki, you have to write your own thing to be added here, and not just copy and paste someone else's work as if it was yours. Please, remember that from now on.
Super x 1234: What you did was Plagiarism because you didn't gave proper attribution to the original authors of the text. That's not allowed on our site and I'm glad you promised not to do it again. If you have properly attributed text, like explained here, it wouldn't have been plagiarism. However, our community don't usually welcome outside content as you can see from comments above.
For everybody: Everything written in here or at MCU Wiki is released under CC BY-SA license which allows reusing of content and local wikia policies can't override that. It means that everything you write can be copied to elsewhere. As a supporter of free culture movement, I find it hypocritical to use term stealing so freely when both of our wikias use so much copyrighted content without a permission.