Restructure things to fit upcoming diff

java/csharp/Facebook.CSSLayout/CSSOverflow.cs

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2014, 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.
+ */
+
+namespace Facebook.CSSLayout
+{
+    public enum CSSOverflow
+    {
+        Visible,
+        Hidden
+    }
+}