Azure is not a bad option. They have a free level of service with Azure WebPages that I've used for my hand-rolled ASP.NET MVC4 blog (richardssoftware.net). Once you're setup, its dead simple to update your app, either through Visual Studio or by setting up GitHub integration to automatically publish on commit.

Using a custom domain name requires that you bump up to the next level, but that is only about $10 a month.