add soap moudle definition

soap/soap-tests.ts

@@ -0,0 +1,19 @@
+/// <reference path="soap.d.ts" />
+
+import * as soap from 'soap';
+
+const url = 'http://example.com/wsdl?wsdl';
+const wsdlOptions = {name: 'value'};
+
+soap.createClient(url, wsdlOptions, function(err: any, client: soap.Client) {
+    let securityOptions = { 'hasTimeStamp': false };
+    client.setSecurity(new soap.WSSecurity('user', 'password', securityOptions));
+    client.addSoapHeader({});
+    client['create']({name: 'value'}, function(err, result) {
+        // result is an object
+    });
+    client['create']({name: 'value'}, function(err, result) {
+        // result is an object
+    }, {});
+});
+

soap/soap.d.ts

@@ -0,0 +1,17 @@
+// Type definitions for soap
+// Project: https://www.npmjs.com/package/soap
+// Definitions by: Nicole Wang <https://github.com/nicoleWjie>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare module 'soap' {
+  class WSSecurity {
+    constructor(username: string, password: string, options: any);
+  }
+  interface Client {
+    setSecurity(s: WSSecurity): void;
+    [method: string]: (args: any, fn: (err: any, result: any) => void, options?: any) => void;
+    addSoapHeader(headJSON: any): void;
+  }
+  function createClient(wsdlPath: string, options: any, fn: (err: any, client: Client) => void): void;
+
+}