Added the underscore node_module.

node_modules/underscore/amd/_baseCreate.js

@@ -0,0 +1,21 @@
+define(['./isObject', './_setup'], function (isObject, _setup) {
+
+  // Create a naked function reference for surrogate-prototype-swapping.
+  function ctor() {
+    return function(){};
+  }
+
+  // An internal function for creating a new object that inherits from another.
+  function baseCreate(prototype) {
+    if (!isObject(prototype)) return {};
+    if (_setup.nativeCreate) return _setup.nativeCreate(prototype);
+    var Ctor = ctor();
+    Ctor.prototype = prototype;
+    var result = new Ctor;
+    Ctor.prototype = null;
+    return result;
+  }
+
+  return baseCreate;
+
+});