There are three elements to this,
There is the emergency number international element - which hasn't yet address the issue of 3 numbers used in some countries, what will happen there? I was intending putting a yellow and green (fire and ambulance) button next to the red ones for those countries.
There is the international number of registration on the mobile app
There is the international element for the web app.
These later 2 need including in version 1.1. anyway, and I'm still waiting to see the 30 responder locations, user start and finish location and route dots.