Build CSS with .scss extension to support SASS re #11

[iamstuartwilson]

@leejordan, super simple, but gets around the fact that non ruby version of the SASS compiler will not inline @import calls to anything with a .css extension. #11

This will mean people can import the entire reflex lib into a SASS/SCSS file from node_modules like so:

// Wherever this sits in relation to your SASS file
$path-node-modules: '../../node_modules';

@import '#{$path-node-modules}/reflex-grid/scss/reflex';

👍

[leejordan]

Thanks