Update site to beta5 (#155)

Author: jelbourn

package.json

@@ -22,7 +22,7 @@
     "@angular/core": "^4.0.0",
     "@angular/forms": "^4.0.0",
     "@angular/http": "^4.0.0",
-    "@angular/material": "^2.0.0-beta.4",
+    "@angular/material": "^2.0.0-beta.5",
     "@angular/platform-browser": "^4.0.0",
     "@angular/platform-browser-dynamic": "^4.0.0",
     "@angular/router": "~4.0.0",

src/app/examples/example-module.ts

@@ -76,8 +76,8 @@ import {DatepickerOverviewExample} from './datepicker-overview/datepicker-overvi
 export interface LiveExample {
   title: string;
   component: any;
-  additionalFiles: string[];
-  selectorName: string;
+  additionalFiles?: string[];
+  selectorName?: string;
 }
 
 /**