gulpfile.js

var gulp = require ( 'gulp' );
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var notify = require( 'gulp-notify' );

gulp.task( 'scripts', function(){
	gulp.src( './assets/js/*.js' )
	.pipe( concat('main.js') )
	.pipe( gulp.dest('./assets/javascript/') )
	.pipe( notify( 'Minificado com sucesso!!!' ) );
});


gulp.task( 'default', function(){
	gulp.watch( './assets/js/*.js', ['scripts'] );
});