Creating a demo is simple:

git clone git:https://github.com/ResponsiveImagesCG/demos.git

Then:

1. Put your images into the images/ folder
2. Replace in any details marked like this [[YOUR TEXT HERE]]
3. Link to your images using the source elements below, and add the right media queries.
4. Add your code
5. Fill out credits
6. Either email us or do a GitHub pull request on the gh-branch (put your files in a folder with a descriptive name).

If you need to see how other people have done this, check out: https://demos.responsiveimages.org

If you need any help, just email us.