gulpfile.js

var gulp = require('gulp'),
    sass = require('gulp-ruby-sass'),
    autoprefix = require('gulp-autoprefixer'),
    notify = require('gulp-notify'),
    browserSync = require('browser-sync'),
    reload = browserSync.reload
;

var config = {
    sassPath: './resources/sass'
};

gulp.task('sass', function() {
    return sass('./resources/sass', {
        loadPath: ['./node_modules/bootstrap-sass/assets/stylesheets']
    })
        .on('error', function (err) {
            console.log('Error!', err.message);
        })
        .pipe( autoprefix('last 2 versions') )
        .pipe( gulp.dest('./public/stylesheets') )
        .pipe( reload( {stream: true} ) )
    ;
});

gulp.task('html', function() {
    return gulp.src('./public/*.html')
        .pipe(gulp.dest('./public'));
});

gulp.task('browser-sync', function() {
    browserSync({
        proxy: 'mlm.local'
    });
});

// Rerun the task when a file changes
gulp.task('watch', function() {
    gulp.watch(config.sassPath + '/**/*.scss', ['sass']);
    gulp.watch('./public/*.html', ['html', reload]);
});

gulp.task('default', ['sass', 'browser-sync', 'watch']);