gulp安装livereload

1.项目目录安装gulp-livereload

cnpm install --save-dev gulp-livereload

2.配置gulpfile.js

var livereload = require("gulp-livereload");
gulp.task('watch', function() {
	livereload.listen();
	gulp.watch(['src/**/*', 'start/**/*'], function(file) {
		livereload.changed(file.path);
	});
});