gulpfile.js

var gulp = require('gulp'),
 gutil = require('gulp-util'),
 nodemon = require('gulp-nodemon'),
 livereload = require('gulp-livereload');

// create a default task and just log a message
gulp.task('default',["develop","watch"], function() {
 return gutil.log('Gulp is running!');
});

gulp.task('develop', function () {
 nodemon({
 script: 'index.js', 
 ext: 'js',
 env: { 'NODE_ENV': 'development' }
 });
});

gulp.task('watch', function() {
 livereload.listen();
 gulp.watch(['public/**']).on('change',livereload.changed);
 gulp.watch(['app/views/**']).on('change',livereload.changed);
});