Allow SASS sourcemaps

[drewcovi]

When using SASS it would be super helpful to use the static-compiler to also move the scss file into the output directory. Currently modifying the preprocessors.js file to add

sourceMap: true;

does successfully create the map file in the output directory. Unfortunately the map points to the wrong source file (using the url of the tmp file).

I realize that broccoli-sass is simply using it's source file to build the app.css.map, although in ember-cli that source is only a temporary item, not available while using ember server

[bguiz]

+1 I would like this feature added myself.

@drewcovi Just to clarify: When you say preprocessors.js, are you referring to node_modules/ember-cli/lib/preprocessors.js?

Where in this file do you add sourceMap: true to - the only mention I find of it is this line (line 12):

registry.add('css', 'broccoli-sass', 'scss');

[stefanpenner]

related to: #810

closing this one, feel free to continue the discussion on 810