Updated angular2-prototype sample to RC0

[s-KaiNet]

Q	A
New feature?	yes

As title says, angular2-prototype sample fixed to support RC0.
Actually not fixed, but rebuilt from ground using yo's "No javascript web framework" (it's easier to rebuild because a lot of changes were introduced in RC0).

Also changed "hack" to grab instance of root ng2 component (no longer works):
this._component = this._app['_rootComponents'][0]['_hostElement']['component'];
to
this._component = this._app['_rootComponents'][0].instance;
which is seems to be working.

[msftclas]

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[VesaJuvonen]

thx Sergei, appreciated. Good to get this to RC level as well.