I want to add this gif to a GitHub flavored markdown file. If it can\'t be done in GitHub, is it possible to do it in another version of markdown?
Showing gifs need two things
1- Use this syntax as in these examples

Yields:
2- The image url must end with gif
3- For posterity: if the .gif link above ever goes bad, you will not see the image and instead see the alt-text and URL, like this:
4- for resizing the gif you can use this syntax as in this Github tutorial link
Yields: