Add example for Angular 2

[dylans]

[LiTiang]

I try to use intern with Angular 2.
The environment i built seems work perfect.
But I have only question

The module format I want to use is system.
( setting value of module to system in tsconfig.json )

All of my app are written to Typescript,
the only Javascript file is intern.js ( I dont use intern.ts for some reason )

intern.js is AMD format, and i change loader to systemjs in it,
because the module format of my Angular2 app are all system.

After transpile all my app, ( .ts -> .js )
we can see the beginning of any one of the app ( .js file ) is

System.register( ...

But if i run test,
it emit an error System is not defined on command line.
It seems intern cannot identify system module.

I have no idea, and try to find the answer.
Please help me.