Nice. However I find 99,9% of notification popups, be it for email, instant messaging or sth. like Dropbox completely superfluous, distracting and thus bad for my productivity and general happiness. Same goes for every iPhone or Android push notification. I just wonder if I'm in a small minority, because everyone seems to like notifications..
It depends on the amount of notifications you're getting -- on the project I work on there are only 3 people working, including me, so I definitely find this project useful as I do want to know when pushes to master happen.
Nice and innovative concept. But it works mainly in cases where there are frequent commits with few branches and some considerable number of developers working on the same project.
Very elegantly done!