Add more Copyright boilerplate.

FindFBX.cmake

@@ -1,3 +1,5 @@
+# Copyright (c) 2014-present, Facebook, Inc.
+# All rights reserved.
 #
 # Helper function for finding the FBX SDK.
 # Cribbed & tweaked from https://github.com/floooh/fbxc/

npm/index.js

@@ -1,3 +1,8 @@
+/**
+* Copyright (c) 2014-present, Facebook, Inc.
+* All rights reserved.
+*/
+
 const childProcess = require('child_process');
 const fs = require('fs');
 const os = require('os');