Added reference of rx-lite.d.ts to rx.binding-lite.d.ts.

rx.js/rx.binding-lite.d.ts

@@ -1,6 +1,8 @@
 // This file contains common part of defintions for rx.binding.d.ts and rx.lite.d.ts
 // Do not include the file separately.
 
+///<reference path="rx-lite.d.ts"/>
+
 declare module Rx {
 	export interface BehaviorSubject<T> extends Subject<T> {
 	}