Update rxjs dependency

[timkindberg]

Apparently our lib doesn't work with latest rxjs release.

https://www.npmjs.com/~reactivex

[SergDi]

event-emitter.js:15Uncaught TypeError: Super expression must either be null or a function, not object

[timkindberg]

I've confirmed this bug. I updated the package.json to point to 'rxjs' instead of '@ReactiveX'. It's still 5.0.0-beta.0 though. I'm pretty sure it's the call to super() happening in EventEmitter.ts. @MikeRyan52 any chance you could take a quick look? Here's where I'm at: d500158 on a new branch https://github.com/ngUpgraders/ng-forward/tree/issue-122

[MikeRyanDev]

Maybe we should just copy Angular 2's EventEmitter (code again)[https://github.com/angular/angular/blob/master/modules/angular2/src/facade/async.ts#L109]? It's been updated for the latest release of RxJS (now beta 1, I think)

[timkindberg]

Except for some line breaks in that update I did copy the latest version of EventEmitter at the time. It's not liking it. See: d500158

[MikeRyanDev]

Ah, sorry. Did not realize that's where you started. I'll take a closer look.