NG2 Quick Hello World

ng2.hellow.ts

/// <reference path="node_modules/angular2/ts/typings/node/node.d.ts"/>
/// <reference path="node_modules/angular2/typings/browser.d.ts"/>
import { bootstrap } from "angular2/platform/browser";
import { Component } from "angular2/core";
@Component({
    selector: 'hello-world',
    template: <div> Hello World! </div>
})
class HelloWorld {
}
bootstrap(HelloWorld);