gulpfile.js

// get the dependencies
var gulp = require('gulp'),
    childProcess = require('child_process'),
    electron = require('electron');

var coffee = require('gulp-coffee'),
    concat = require('gulp-concat'),
    gutil = require('gulp-util'),
    changed = require('gulp-changed'),
    livereload = require('gulp-livereload'),
    lr = require('tiny-lr'),
    server = lr();

var options = {
    COFFEE_SOURCE: "app/scripts/**/*.coffee",
    COFFEE_DEST: "app/assets/js/",
};

// create the gulp task
gulp.task('run', function() {
    childProcess.spawn(electron, ['--debug=5858', './app'], { stdio: 'inherit' });
});

// Transpile coffee to JavaScript
gulp.task('coffee', function() {
    gulp.src(options.COFFEE_SOURCE)
        .pipe(changed(options.COFFEE_SOURCE))
        .pipe(coffee())
        .pipe(gulp.dest(options.COFFEE_DEST))
        .on('error', gutil.log)
        .pipe(livereload(server));
});

gulp.task('watch', function() {
    server.listen(options.LIVE_RELOAD_PORT, function(err) {
        if (err) {
            return console.log(err)
        };
        gulp.watch(options.COFFEE_SOURCE, ['coffee']);
    });
});

gulp.task('build', ['coffee']);