How to specify asset urls after baseUrl deprecation?

Hey!

After fixing the [baseUrl deprecation](http://emberjs.com/blog/2016/04/28/baseURL.html) I've got the problem that specifying the urls for assets in a scss file becomes quite tricky. In our setup I know the baseUrl (or nowadays the rootURL) at build time and not when I write the scss file. I opened a thread on discuss.emberjs.com [for more details click here](http://discuss.emberjs.com/t/baseurl-deprecation-and-scss-assets/11424).

I also built a "hacky" solution which works fine for us but I'm interested what would be a good approach to solve this problem. Are there any plans in solving this issue within ember-cli-sass?

Thanks a lot