main.scss compiling on server, but not on build (solution)

I ran into this problem and got it "fixed".

When you do `yeoman init`, the files `main.scss` and `main.css` are created.

Unless you delete `main.css`, the `yeoman build` will ignore the `main.scss` (or overwrite it, I'm not sure)

So, be sure to delete the `main.css` if you are not using it directly.
