Windows Live oauth

You can register your application and obtain your Client ID/Client secret  [here](https://account.live.com/developers/applications).
Live Connect documentation you can find [here](http://msdn.microsoft.com/library/live/).
Color ```#2672EC``` taken from [live profile header](https://profile.live.com).
Try it [here](http://my-gae-init.appspot.com/signin/).