Corrected Nodejs querystring (un)escape definitions

node/node-0.11.d.ts

@@ -250,8 +250,8 @@ declare module "buffer" {
 declare module "querystring" {
     export function stringify(obj: any, sep?: string, eq?: string): string;
     export function parse(str: string, sep?: string, eq?: string, options?: { maxKeys?: number; }): any;
-    export function escape(): any;
-    export function unescape(): any;
+    export function escape(str: string): string;
+    export function unescape(str: string): string;
 }
 
 declare module "events" {