Update material version to rc3 & fix type for ExampleViewer (#345)

Author: tinayuangao

package.json

@@ -20,14 +20,14 @@
   "private": true,
   "dependencies": {
     "@angular/animations": "^5.0.0",
-    "@angular/cdk": "^5.0.0-rc.2",
+    "@angular/cdk": "^5.0.0-rc.3",
     "@angular/common": "^5.0.0",
     "@angular/compiler": "^5.0.0",
     "@angular/core": "^5.0.0",
     "@angular/forms": "^5.0.0",
     "@angular/http": "^5.0.0",
-    "@angular/material": "^5.0.0-rc.2",
-    "@angular/material-moment-adapter": "^5.0.0-rc.2",
+    "@angular/material": "^5.0.0-rc.3",
+    "@angular/material-moment-adapter": "^5.0.0-rc.3",
     "@angular/platform-browser": "^5.0.0",
     "@angular/platform-browser-dynamic": "^5.0.0",
     "@angular/router": "^5.0.0",

src/app/shared/doc-viewer/doc-viewer.ts

@@ -92,7 +92,7 @@ export class DocViewer implements OnDestroy {
           element, this._componentFactoryResolver, this._appRef, this._injector);
       let examplePortal = new ComponentPortal(componentClass, this._viewContainerRef);
       let exampleViewer = portalHost.attach(examplePortal);
-      exampleViewer.instance.example = example;
+      (exampleViewer.instance as ExampleViewer).example = example;
 
       this._portalHosts.push(portalHost);
     });