Browser Extension

I don't pretend to know how you create them, but would it be possible to have one for D12? I have several and say one for Gmail has a little badge with the number of unread emails. Maybe the extension could show the number of turns needing to be taken? If you click on it then it would take you to your games list?

I have no idea how to make them either. But there is an api to query how many games there are for you to take a turn in, so it is possible to do this.