Sync upstream modules

src/vendor/core/CSSCore.js

@@ -97,7 +97,7 @@ var CSSCore = {
    *
    * @param {DOMNode|DOMWindow} element the element to set the class on
    * @param {string} className the CSS className
-   * @returns {boolean} true if the element has the class, false if not
+   * @return {boolean} true if the element has the class, false if not
    */
   hasClass: function(element, className) {
     invariant(

src/vendor/stubs/EventListener.js

@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013-2014 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
  * @providesModule EventListener
  * @typechecks
  */