Merge pull request dotnet#115 from dotnet/blackdwarf-patch-1

Create license.txt

Author: BethMassi

license.txt

@@ -0,0 +1,7 @@
+Copyright (c) .NET Foundation. All rights reserved.
+
+Documentation is licensed under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/legalcode). 
+
+Code is licensed under the MIT License (https://opensource.org/licenses/MIT).
+
+This license does not grant you rights to use any trademarks or logos of Microsoft. For Microsoft’s general trademark guidelines, go to http://go.microsoft.com/fwlink/?LinkID=254653.