[ADF-4152] Updated folder structure of core docs (#4415)

* [ADF-4152] Moved core library docs into subfolders

* [ADF-4152] Moved core library docs into subfolders

* [ADF-4152] Manual fixes to core doc file links

* [ADF-4152] Further automatic + manual link tidying

docs/core/directives/context-menu.directive.md

@@ -0,0 +1,58 @@
+---
+Title: Context Menu directive
+Added: v2.0.0
+Status: Active
+Last reviewed: 2018-11-20
+---
+
+# [Context Menu directive](../../../lib/core/context-menu/context-menu.directive.ts "Defined in context-menu.directive.ts")
+
+Adds a context menu to a component.
+
+## Basic Usage
+
+```html
+<my-component [adf-context-menu]="menuItems"></my-component>
+<adf-context-menu-holder></context-menu-holder>
+```
+
+```ts
+@Component({
+    selector: 'my-component'
+})
+export class MyComponent implements OnInit {
+
+    menuItems: any[];
+
+    constructor() {
+        this.menuItems = [
+            { title: 'Item 1', subject: new Subject() },
+            { title: 'Item 2', subject: new Subject() },
+            { title: 'Item 3', subject: new Subject() }
+        ];
+    }
+
+    ngOnInit() {
+        this.menuItems.forEach(l => l.subject.subscribe(item => this.commandCallback(item)));
+    }
+
+    commandCallback(item) {
+        alert(`Executing ${item.title} command.`);
+    }
+
+}
+```
+
+## Class members
+
+### Properties
+
+| Name | Type | Default value | Description |
+| ---- | ---- | ------------- | ----------- |
+| enabled | `boolean` | false | Is the menu enabled? |
+| links | `any[]` |  | Items for the menu. |
+
+## Details
+
+See the [Demo Shell](../../../demo-shell/README.md)
+or [Document List component](../../content-services/document-list.component.md) implementation for more details and use cases.