docs(demos): navigation demo

demos/component-docs/navigation.ts

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+import {NavController, NavParams} from 'ionic/ionic';
+import {IonicView, Events} from 'ionic/ionic';
+import * as helpers from 'helpers';
+
+@IonicView({
+  templateUrl: 'navigation.html'
+})
+export class NavigationDetailsPage {
+  constructor(nav: NavController, params: NavParams, events: Events) {
+    this.nav = nav;
+    this.selection = { title: params.data.name };
+    var navData = {
+        'Angular': "A powerful Javascript framework for building single page apps. Angular is open source, and maintained by Google.",
+        'CSS3': "The latest version of cascading stylesheets - the styling language of the web!",
+        'HTML5': "The latest version of the web's markup language.",
+        'Sass': "Syntactically Awesome Stylesheets - a mature, stable, and powerful professional grade CSS extension."
+    };
+    var navIcons = {
+        'Angular': 'ion-social-angular',
+        'CSS3': 'ion-social-css3',
+        'HTML5': 'ion-social-html5',
+        'Sass': 'ion-social-sass'
+    };
+    this.selection['content'] = navData[this.selection.title];
+    this.selection['icon'] = navIcons[this.selection.title];
+    window.onmessage = (e) => {
+      zone.run(() => {
+        if (e.data) {
+          var data = JSON.parse(e.data);
+          var componentTitle = helpers.toTitleCase(data.hash.replace('-', ' '));
+          events.publish('page:locationChange', { componentName: componentTitle });
+          this.nav.pop();
+        }
+      });
+    };
+
+  }
+}