move Toast to oss

Summary: Importing JS changes to fbobjc which should be maintained as a source of truth
for React Native JS files. For more details about this change, please refer to
the original diff in fbandroid repo: D2410797

Reviewed By: @andreicoman11

Differential Revision: D2424679

Libraries/Components/ToastAndroid/ToastAndroid.ios.js

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule ToastAndroid
+ */
+'use strict';
+
+module.exports = require('UnimplementedView');