made minimum sass version 3.4.9 [#RPTREE-17]
fixed a variable that was still set to the wordpress way [#RPTREE-17]
adding gulp-sourcemaps [#RPTREE-17]
Sass updated to 3.4.9 [#RPTREE-17]
gulp-autoprefixer 2.* doesn't seem to play nice with sourcemaps, so downgraded to the 1.* version. [#RPTREE-17]