diff --git a/poly/LICENSE b/poly/LICENSE
new file mode 100644
index 0000000..8f383e7
--- /dev/null
+++ b/poly/LICENSE
@@ -0,0 +1,4 @@
+This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+International License. See the full details here:
+
+  http://creativecommons.org/licenses/by-sa/4.0/