Update sleeky

plugins/sleeky-frontend/frontend/gulpfile.js

@@ -0,0 +1,14 @@
+var gulp = require('gulp');
+var sass = require('gulp-sass')(require('sass'));
+
+gulp.task('sass', () => {
+    return gulp.src("./assets/sass/*.scss")
+        .pipe(sass())
+        .pipe(gulp.dest("dist/"))
+});
+
+gulp.task('start', gulp.series('sass', function () {
+    gulp.watch("sass/*.scss", gulp.series('sass'));
+}));
+
+gulp.task('default', gulp.series('start'));