diff --git a/CONTRIBUTIONS b/CONTRIBUTIONS
new file mode 100644
index 0000000..11ba31e
--- /dev/null
+++ b/CONTRIBUTIONS
@@ -0,0 +1,4 @@
+Contributors must agree to the Contributor License Agreement before patches
+can be accepted.
+
+http://spreadsheets2.google.com/viewform?hl=en&formkey=dDJXOGUwbzlYaWM4cHN1MERwQS1CSnc6MQ