Updating license to standard Microsoft header.

LICENSE.txt

@@ -1,6 +1,8 @@
-The MIT License (MIT)
+Copyright (c) Microsoft Corporation
 
-Copyright (c) 2015 Microsoft
+All rights reserved. 
+
+MIT License
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal