fix reference path of app.ts

[heziqiang]

change the path "typings/angular2/angular2.d.ts"
to absolute path "/typings/angular2/angular2.d.ts"
or "../typings/angular2/angular2.d.ts"

[heziqiang]

perhaps i misunderstood

[johnjelinek]

I also noticed that index.html needs a reference update too:

<script src="../bundle/angular2.dev.js"></script>

[johnjelinek]

oh .. nvm, it all hinges on this step:

cp complete/* .

then all the paths are correct. Unfortunately, running tsc until the copy, it will display a warning about referencing the d.ts.