chore(build): fix demo compile errors, tslint errors

fix demo compile errors, tslint errors

demos/src/label/AppModule.ts

@@ -0,0 +1,32 @@
+import { Component, NgModule } from '@angular/core';
+
+import { IonicApp, IonicModule } from 'ionic-angular';
+
+
+@Component({
+  templateUrl: 'main.html'
+})
+export class ApiDemoPage {}
+
+
+@Component({
+  template: '<ion-nav [root]="root"></ion-nav>'
+})
+export class ApiDemoApp {
+  root = ApiDemoPage;
+}
+
+@NgModule({
+  declarations: [
+    ApiDemoApp,
+    ApiDemoPage
+  ],
+  imports: [
+    IonicModule.forRoot(ApiDemoApp)
+  ],
+  bootstrap: [IonicApp],
+  entryComponents: [
+    ApiDemoPage
+  ]
+})
+export class AppModule {}