Merge pull request phaserjs#3518 from PaNaVTEC/typescript-definitions

Add KeyboardManager#createCursorKeys typedefs

Author: photonstorm

src/input/keyboard/KeyboardManager.js

@@ -190,13 +190,24 @@ var KeyboardManager = new Class({
         this.target.removeEventListener('keyup', this.handler);
     },
 
+    /**
+     * @typedef {object} CursorKeys
+     *
+     * @property {Phaser.Input.Keyboard.Key} [up] - [description]
+     * @property {Phaser.Input.Keyboard.Key} [down] - [description]
+     * @property {Phaser.Input.Keyboard.Key} [left] - [description]
+     * @property {Phaser.Input.Keyboard.Key} [right] - [description]
+     * @property {Phaser.Input.Keyboard.Key} [space] - [description]
+     * @property {Phaser.Input.Keyboard.Key} [shift] - [description]
+     */
+
     /**
      * Creates and returns an object containing 4 hotkeys for Up, Down, Left and Right, and also space and shift.
      *
      * @method Phaser.Input.Keyboard.KeyboardManager#createCursorKeys
      * @since 3.0.0
      *
-     * @return {object} [description]
+     * @return {CursorKeys} [description]
      */
     createCursorKeys: function ()
     {