feat(package): upgrade to ng v2.3+ (#574)

demo/src/app/app.module.ts

@@ -0,0 +1,19 @@
+import { CommonModule } from '@angular/common';
+import { NgModule } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { BrowserModule } from '@angular/platform-browser';
+
+import { TabsModule } from 'ng2-bootstrap';
+import { FileUploadModule } from 'ng2-file-upload';
+
+import { AppComponent } from './app.component';
+import { FileUploadSectionComponent } from './components/file-upload-section';
+import { SimpleDemoComponent } from './components/file-upload/simple-demo';
+
+@NgModule({
+  imports: [BrowserModule, CommonModule, FileUploadModule, TabsModule.forRoot(), FormsModule],
+  declarations: [AppComponent, FileUploadSectionComponent, SimpleDemoComponent],
+  bootstrap: [AppComponent]
+})
+export class AppModule {
+}