Update Player with new function requestFullscreen/cancelFullscreen

But keep the legacy functions

types/video.js/index.d.ts

@@ -1,6 +1,7 @@
 // Type definitions for Video.js 5.16
 // Project: https://github.com/zencoder/video-js
 // Definitions by: Vincent Bortone <https://github.com/vbortone>
+//				   Simon Clériot <https://github.com/scleriot>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // The Video.js API allows you to interact with the video through
@@ -49,6 +50,8 @@ declare namespace videojs {
 		size(width: number, height: number): Player;
 		requestFullScreen(): Player;
 		cancelFullScreen(): Player;
+		requestFullscreen(): Player;
+		cancelFullscreen(): Player;
 		ready(callback: (this: Player) => void): Player;
 		on(eventName: string, callback: (eventObject: Event) => void): void;
 		off(eventName?: string, callback?: (eventObject: Event) => void): void;