wiring up scss working v0.1

Its not perfect but it works - generates the main.css (although it does
also create the imports as .css as well - a temp side effect until i
work out how to ignore them)

You can live edit the scss so thats what counts

''yeoman build'' copies a lot of crap i need to work out how best to do
staging folder vs temp.
deleted - obsolete

moved saas to a saas folder. So its easier to delete as a whole in dist
build.