chore: fix issue where style watcher would trigger on css file changes
chore: fix issue where style watcher would trigger on css file changes

 - watch scss source files only so as not to trigger a change that triggers another change

parmalatinter/ng2-material,paulussup/ng2-material,Q-Free-OpenRoads/ng2-material,parmalatinter/ng2-material,paulussup/ng2-material,dmacfarlane/ng2-material,Q-Free-OpenRoads/ng2-material,mailiam/ng2-material,mailiam/ng2-material,parmalatinter/ng2-material,mailiam/ng2-material,dmacfarlane/ng2-material,dmacfarlane/ng2-material,Q-Free-OpenRoads/ng2-material,paulussup/ng2-material,Q-Free-OpenRoads/ng2-material