Take a big Gulp!

Gulp

var gulp = require('gulp'),
    less = require('gulp-less'),
    livereload = require('gulp-livereload'),
    notify = require('gulp-notify');
    minifycss = require('gulp-minify-css');
    gutil = require('gulp-util');

gulp.task('less', function() {
    return gulp.src(['../blog/css/*.less'], {base: '../blog/css/'})
    .pipe(less().on('error', function(err){
        gutil.log(err);
        return notify().write(err);
        this.emit('end');
    }))
    .pipe(minifycss())
    .pipe(livereload())
    .pipe(gulp.dest('../blog/css/'))    
});

gulp.task('watch', function() {
    livereload.listen();
    gulp.watch('../blog/css/*.less', ['less']);
});