Add license disclaimer (#76)

Clearly denote the repository license is from me, not my employer (Facebook).

LICENSE.txt

+I am providing code and resources in this repository to you under an open source
+license.  Because this is my personal repository, the license you receive to my
+code and resources is from me and not my employer (Facebook).
+
+Copyright 2017 Donne Martin
+
 Creative Commons Attribution 4.0 International License (CC BY 4.0)
 
 http://creativecommons.org/licenses/by/4.0/

README.md

@@ -1776,6 +1776,10 @@ My contact info can be found on my [GitHub page](https://github.com/donnemartin)
 
 ## License
 
+*I am providing code and resources in this repository to you under an open source license.  Because this is my personal repository, the license you receive to my code and resources is from me and not my employer (Facebook).*
+
+    Copyright 2017 Donne Martin
+
     Creative Commons Attribution 4.0 International License (CC BY 4.0)
 
     http://creativecommons.org/licenses/by/4.0/