Add JQuery focusin and focusout overload typings

See http://api.jquery.com/focusin/ and http://api.jquery.com/focusout/

Author: TylerBrinkley

jquery/jquery.d.ts

@@ -1998,6 +1998,10 @@ interface JQuery {
      */
     focus(eventData?: any, handler?: (eventObject: JQueryEventObject) => any): JQuery;
 
+    /**
+     * Trigger the "focusin" event on an element.
+     */
+    focusin(): JQuery;
     /**
      * Bind an event handler to the "focusin" JavaScript event
      *
@@ -2012,6 +2016,10 @@ interface JQuery {
      */
     focusin(eventData: Object, handler: (eventObject: JQueryEventObject) => any): JQuery;
 
+    /**
+     * Trigger the "focusout" event on an element.
+     */
+    focusout(): JQuery;
     /**
      * Bind an event handler to the "focusout" JavaScript event
      *