Merge pull request #1018 from damianog/patch-4

ServerRequest headers is an object

node/node.d.ts

@@ -246,7 +246,7 @@ declare module "http" {
     export interface ServerRequest extends events.NodeEventEmitter, stream.ReadableStream {
         method: string;
         url: string;
-        headers: string;
+        headers: any;
         trailers: string;
         httpVersion: string;
         setEncoding(encoding?: string): void;
@@ -1083,4 +1083,4 @@ declare module "domain" {
     export function bind(cb: (er: Error, data: any) =>any): any;
     export function intercept(cb: (data: any) => any): any;
     export function dispose(): void;
-}
+}