title: Property 'forRoot' does not exist on type 'typeof MdCoreModule'
body: <p>Upgrading my Angular 2.0.0-rc.6 application with Angular Material 2.0.0-alpha.8-1, I now get compilation errors like:</p>
  
  <pre><code>Property 'forRoot' does not exist on type 'typeof MdCoreModule'.
  </code></pre>
  
  <p>and here's the <code>AppModule</code>:</p>
  
  <pre><code>import { MdCoreModule } from '@angular2-material/core/core';
  import { MdButtonModule } from '@angular2-material/button/button';
  import { MdButtonToggleModule } from '@angular2-material/button-toggle/button-toggle';
  import { MdCardModule } from '@angular2-material/card/card';
  import { MdCheckboxModule } from '@angular2-material/checkbox/checkbox';
  // ... additional imports
  
  @NgModule({
    declarations: [
      AppComponent,
      // ... additional application-specific declarations
    ],
    imports: [
      BrowserModule,
      CommonModule,
      ReactiveFormsModule,
      HttpModule,
      JsonpModule,
      MdCoreModule.forRoot(),
      MdButtonModule.forRoot(),
      MdButtonToggleModule.forRoot(),
      MdCardModule.forRoot(),
      MdCheckboxModule.forRoot(),
      // ... additional imports
    ],
    providers : [
      Configuration,
      // ... additional application-specific providers
    ],
    entryComponents: [AppComponent],
    bootstrap: [AppComponent]
  })
  export class AppModule {    
  }
  </code></pre>
  
  <p>which is as recommended in the <a href="https://github.com/angular/material2/blob/master/CHANGELOG.md" rel="nofollow">CHANGELOG</a>. Any ideas what I'm doing wrong?</p>
  
  <pre><code>  "dependencies": {
      "@angular/common": "2.0.0-rc.6",
      "@angular/compiler": "2.0.0-rc.6",
      "@angular/core": "2.0.0-rc.6",
      "@angular/forms": "2.0.0-rc.6",
      "@angular/http": "2.0.0-rc.6",
      "@angular/platform-browser": "2.0.0-rc.6",
      "@angular/platform-browser-dynamic": "2.0.0-rc.6",
      "@angular/router": "3.0.0-rc.2",
      "@angular2-material/button": "2.0.0-alpha.8-1",
      "@angular2-material/button-toggle": "2.0.0-alpha.8-1",
      "@angular2-material/card": "2.0.0-alpha.8-1",
      "@angular2-material/checkbox": "2.0.0-alpha.8-1",
      "@angular2-material/core": "2.0.0-alpha.8-1",
      "@angular2-material/grid-list": "2.0.0-alpha.8-1",
      "@angular2-material/icon": "2.0.0-alpha.8-1",
      "@angular2-material/input": "2.0.0-alpha.8-1",
      "@angular2-material/list": "2.0.0-alpha.8-1",
      "@angular2-material/menu": "2.0.0-alpha.8-1",
      "@angular2-material/progress-bar": "2.0.0-alpha.8-1",
      "@angular2-material/progress-circle": "2.0.0-alpha.8-1",
      "@angular2-material/radio": "2.0.0-alpha.8-1",
      "@angular2-material/sidenav": "2.0.0-alpha.8-1",
      "@angular2-material/slide-toggle": "2.0.0-alpha.8-1",
      "@angular2-material/slider": "2.0.0-alpha.8-1",
      "@angular2-material/tabs": "2.0.0-alpha.8-1",
      "@angular2-material/toolbar": "2.0.0-alpha.8-1",
      "@angular2-material/tooltip": "2.0.0-alpha.8-1",
      "core-js": "^2.4.0",
      "reflect-metadata": "0.1.8",
      "rxjs": "5.0.0-beta.11",
      "ts-helpers": "^1.1.1",
      "zone.js": "0.6.17"
    }
  </code></pre>
  
  <p>and</p>
  
  <pre><code>  "devDependencies": {
      "@types/hammerjs": "2.0.32",
      "@types/jasmine": "^2.2.30",
      "angular-cli": "1.0.0-beta.11-webpack.8",
      "codelyzer": "0.0.26",
      "hammerjs": "2.0.8",
      "jasmine-core": "2.4.1",
      "jasmine-spec-reporter": "2.5.0",
      "karma": "0.13.22",
      "karma-chrome-launcher": "0.2.3",
      "karma-jasmine": "0.3.8",
      "karma-remap-istanbul": "^0.2.1",
      "protractor": "4.0.3",
      "reflect-metadata": "0.1.8",
      "string-replace-loader": "1.0.3",
      "ts-node": "1.2.1",
      "tslint": "3.13.0",
      "typescript": "2.0.0"
    }
  </code></pre>
  
  <p>Environment:</p>
  
  <pre><code>angular-cli: 1.0.0-beta.11-webpack.8
  node: 6.5.0
  os: linux x64
  </code></pre>