Add a contributing file

2016-06-01 16:31:37 -07:00 · 2016-06-01 16:31:37 -07:00 · b6171e7ce3
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -0,0 +1,3 @@
+To contribute code, please sign the [Microsoft CLA][cla]. It's easy---no faxing or printing required!
+
+[cla]: https://cla.microsoft.com/