Using stylus in Gulp

stylus-in-gulp.js

# stylus plugin from https://github.com/stevelacy/gulp-stylus

# include this require in the variables on top
var stylus      = require('gulp-stylus');

# Gulp task
gulp.task('stylus', function () {
    return gulp.src('_stylus/*.styl')
        .pipe(stylus({
            includePaths: ['stylus'],
            onError: browserSync.notify
        }))
        .pipe(gulp.dest('_site/css'))
        .pipe(browserSync.reload({stream:true}))
        .pipe(gulp.dest('css'));
});