feat(demo): add landing page with docs (#1951)

docs/app/blocks/components/api-block/api-block.component.ts

@@ -0,0 +1,38 @@
+/**
+ * @license
+ * Copyright Akveo. All Rights Reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ */
+
+import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
+import { NgxTabbedService } from '../../../@theme/services/tabbed.service';
+
+@Component({
+  selector: 'ngx-api-block',
+  template: `
+    <nb-card [ngxFragment]="source.slag">
+      <nb-card-body>
+        <h2>{{ source.name }}</h2>
+        <ngx-props-block [source]="source" *ngIf="hasProps(source)"></ngx-props-block>
+        <ngx-methods-block [source]="source" *ngIf="hasMethods(source)"></ngx-methods-block>
+      </nb-card-body>
+    </nb-card>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class NgxApiBlockComponent {
+
+  @Input('source') source;
+
+  constructor(private tabbedService: NgxTabbedService) {
+  }
+
+
+  hasMethods(component) {
+    return this.tabbedService.componentHasMethods(component);
+  }
+
+  hasProps(component) {
+    return this.tabbedService.componentHasProps(component);
+  }
+}