Wiki update for latest Firebase and AngularFire2

I'm submitting a ... (check one with "x")

[ ] bug report => search github for a similar issue or PR before submitting
[ x] feature request
[ ] support request => Please do not submit support request here, instead see use [gitter](https://gitter.im/mgechev/angular2-seed) or [stackoverflow](https://stackoverflow.com/questions/tagged/angular2)

Current behavior
With latest firebase and angularfire2 not working.

Expected behavior
With latest firebase and angularfire2 seed must be working after including the 3rd party libraries as per wiki guidelines.

Minimal reproduction of the problem with instructions

Download NPM Modules

"angularfire2": "^5.0.0-rc.3",

"firebase": "^4.6.0"

In project.config.ts

// Add packages (e.g. ng2-translate)
let additionalPackages: ExtendPackages[] = [
  {
    name: 'firebase',
    path: 'node_modules/firebase/',
    packageMeta: {
      main: 'app.js',
      defaultExtension: 'js'
    }
  },
  {
    name: 'angularfire2',
    path: 'node_modules/angularfire2/',
    packageMeta: {
      main: 'angularfire2.js',
      defaultExtension: 'js'
    }
  }
];
//
this.addPackagesBundles(additionalPackages);

In app.module.ts

import { AngularFireModule } from 'angularfire2';
const FIREBASE_APP_CONFIG = {
apiKey: '',
authDomain: '',
databaseURL: '',
projectId: '',
storageBucket: '',
messagingSenderId: ''
};

@NgModule({
imports: [BrowserModule, HttpModule, AppRoutingModule, AboutModule, HomeModule, SharedModule.forRoot(),
AngularFireModule.initializeApp(FIREBASE_APP_CONFIG)
],

What is the motivation / use case for changing the behavior?
To use latest version of firebase and angularfire2

Please tell us about your environment:
Mac, npm,

• Angular Seed Version: ab4a987
  ab4a987

• Node: node --version = 5.4.2

Start with the wiki guidance and compare it with the Firebase and AngularFire2 versions listed in the issue. Review project.config.ts and app.module.ts, then verify whether the documented setup works with those dependencies in the Angular seed. Done means the wiki instructions and any required configuration are consistent and the seed starts successfully.