gulpfile.js

var gulp = require('gulp');
var sass = require('gulp-ruby-sass');
var smushit = require('gulp-smushit');
var concat = require('gulp-concat');
var merge = require('merge-stream');
var rename = require('gulp-rename');
var uglify = require('gulp-uglify');
var jshint = require('gulp-jshint');
var browserSync = require('browser-sync');
var reload = browserSync.reload;

gulp.task('default', ['browser-sync'], function() {
	gulp.watch("scss/**/*.scss", ['sass']);
    gulp.watch('js/src/**/*.js', ['lint', 'minify']);
});

gulp.task('sass', function() {
	return gulp.src('scss/main.scss')
		.pipe(sass())
		.on('error', function(err) {
			console.log(err.message);
		})
		.pipe(gulp.dest('css'))
		.pipe(reload({stream:true}));
});

gulp.task('smush', function() {
	return gulp.src('images/*.{jpg,png}').pipe(smushit({
		'verbose': true
	})).pipe(gulp.dest('images'));
});

gulp.task('minify', function() {
	
	var together = gulp.src([
			'js/src/vendor/jquery-1.11.1.min.js', 
			'js/src/vendor/jquery.validate.js', 
			'js/src/**/*.js', 
			'!js/src/vendor/modernizr-2.6.2.min.js'
		])
		.pipe(concat('all.js'))
		.pipe(gulp.dest('js/dist'))
		.pipe(rename('all.min.js'))
		.pipe(uglify())
		.pipe(gulp.dest('js/dist'));
		
	var separate = gulp.src('js/src/vendor/modernizr-2.6.2.min.js')
		.pipe(gulp.dest('js/dist/vendor'));
		
	return merge(together, separate, reload());
});

gulp.task('lint', function() {
	return gulp.src(['js/src/**/*.js', '!js/src/vendor/*.js']) 
		// lint all js files but what's in the vendor dir
		.pipe(jshint())
		.pipe(jshint.reporter('default'));
});

gulp.task('browser-sync', function() {
    browserSync({
        proxy: "gulp_project_2.dev/"
    });
});