Revert "Add a demo"

This reverts commit e2239c89237b25abab354797b354f9229c82c093.
Revert "Revert "Add a demo""

This reverts commit c13ded957e5027d4b0612a60ee3b0a4a89157735.
Revert "Add a demo"

This reverts commit e2239c89237b25abab354797b354f9229c82c093.
Revert "Add a new repository"

This reverts commit 4a035a355922a25d6716bcdceb88f4e95434ebe0.