add types of get-port

get-port/get-port-tests.ts

@@ -0,0 +1,7 @@
+/// <reference path="get-port.d.ts" />
+
+import * as getPort from "get-port";
+
+getPort().then(port => {
+    console.log(port);
+});

get-port/get-port.d.ts

@@ -0,0 +1,9 @@
+// Type definitions for ajv
+// Project: https://github.com/sindresorhus/get-port
+// Definitions by: York Yao <https://github.com/plantain-00/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare module "get-port" {
+    var getPort: () => PromiseLike<number>
+    export = getPort;
+}