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

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

@@ -0,0 +1,24 @@
+/**
+ * @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';
+
+@Component({
+  selector: 'ngx-styles-block',
+  template: `
+    <nb-card [ngxFragment]="source.slag">
+      <nb-card-body>
+        <h2>{{ source.name }}</h2>
+        <ngx-styles-table-block [source]="source"></ngx-styles-table-block>
+      </nb-card-body>
+    </nb-card>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class NgxStylesBlockComponent {
+
+  @Input() source;
+}