fix sourcemaps

test/assets/dist/index.js

@@ -1,5 +1,3 @@
-#!/usr/bin/env node
-
 /// <reference path="./typings/main.d.ts" />
 var testplugin = {
     logSomething: function () {

test/assets/test/test.js

@@ -1,5 +1,3 @@
-#!/usr/bin/env node
-
 /// <reference path="../ts/typings/main.d.ts" />
 console.log("**** starting test ****");
 var testplugin = require("../dist/index.js");