docs(): update docs

src/config/directives.ts

@@ -44,6 +44,7 @@ import {NavbarTemplate, Navbar} from '../components/navbar/navbar';
 import {ShowWhen, HideWhen} from '../components/show-hide-when/show-hide-when';
 
 /**
+ * @private
  * @name IONIC_DIRECTIVES
  * @description
  * The core Ionic directives as well as Angular's `CORE_DIRECTIVES` and `FORM_DIRECTIVES` are

src/gestures/drag-gesture.ts

@@ -1,6 +1,9 @@
 import {Gesture} from './gesture';
 import {defaults} from '../util';
 
+/**
+ * @private
+ */
 
 export class DragGesture extends Gesture {
   public dragging: boolean;

src/gestures/gesture.ts

@@ -2,6 +2,7 @@ import {defaults, assign} from '../util';
 import {Hammer, DIRECTION_HORIZONTAL, DIRECTION_VERTICAL} from './hammer';
 
 /**
+ * @private
  * A gesture recognizer class.
  *
  * TODO(mlynch): Re-enable the DOM event simulation that was causing issues (or verify hammer does this already, it might);