Augment Express Request definition with User model. Fixes microsoft#221

Thanks!

Author: peterblazejewicz

src/types/express-fix.d.ts

@@ -0,0 +1,9 @@
+import express from 'express';
+import { UserDocument } from '../models/User';
+
+declare module 'express' {
+  export interface User extends UserDocument {}
+  export interface Request {
+    user?: User;
+  }
+}