Adding multer.d.ts for expressjs multer support

multer/multer-tests.ts

@@ -0,0 +1,8 @@
+/// <reference path="../express/express.d.ts" />
+/// <reference path="multer.d.ts" />
+
+import express = require('express');
+import multer = require('multer');
+
+var app: express.Express = express();
+app.use(multer());

multer/multer.d.ts

@@ -0,0 +1,14 @@
+// Type definitions for multer
+// Project: https://github.com/expressjs/multer
+// Definitions by: jt000 <https://github.com/jt000>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../express/express.d.ts" />
+
+declare module "multer" {
+    import express = require('express');
+
+    function Multer(options?: any): express.RequestHandler;
+
+    export = Multer;
+}