Gulp config

gulpfile.js

var gulp = require('gulp');
var watch = require('gulp-watch');
var sass = require('gulp-sass');
var autoprefixer = require('gulp-autoprefixer');
var cleanCSS = require('gulp-clean-css');
var rename = require('gulp-rename');
var ftp = require('gulp-ftp');

/*  */
var ftpAccess = {
	site: {host:'hostname', user:'user', pass:'password', remotePath: '/'}
};

/* FTP */
var options = ftpAccess.site;

/* Minify CSS */
gulp.task('css', function() {
	gulp.src('style.scss')
		.pipe(sass())
		.pipe(autoprefixer('last 15 versions'))
		.pipe(cleanCSS())
		.pipe(rename('style.min.css'))
		.pipe(ftp(options))
		.pipe(gulp.dest('source'));
});

/* GULP watch */
gulp.task('watch', function() {
	gulp.watch('style.scss', ['css']);
});

/* GULP default */
gulp.task('default', ['css']);