Adding TypeScript definitions. (#2)

* Adding TypeScript definitions.

Resolves #1.

* Adding TypeScript definitions

index.d.ts

@@ -0,0 +1,23 @@
+// Type definitions for awilix-express
+// Project: https://github.com/talyssonoc/awilix-express
+// Definitions by: Brian Love <https://github.com/blove/>
+
+/// <reference types="awilix" />
+/// <reference types="express" />
+
+import awilix = require("awilix");
+import express = require("express");
+
+/**
+ * The core.Request interface.
+ * @interface Request
+ */
+export interface Request extends express.Request {
+  container: awilix.AwilixContainer;
+}
+
+/**
+ * Bind awilix scope for each request.
+ * @param {AwilixContainer} container
+ */
+export declare function scopePerRequest(container: awilix.AwilixContainer): express.RequestHandler;