docs(demos): add grid example

Closes #536

demos/component-docs/grid/basic/pages.ts

@@ -0,0 +1,13 @@
+import {Page} from 'ionic/ionic';
+import {forwardRef} from 'angular2/angular2';
+import {AndroidAttribute} from '../../helpers';
+
+@Page({
+    templateUrl: 'grid/basic/template.html',
+    directives: [forwardRef(() => AndroidAttribute)]
+})
+export class BasicPage {
+    constructor() {
+
+    }
+}