diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..bdf4769
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,5 @@
+This work is licensed under the Creative Commons
+Attribution-ShareAlike 4.0 International License. To view a copy of
+this license, visit http://creativecommons.org/licenses/by-sa/4.0/ or
+send a letter to Creative Commons, PO Box 1866, Mountain View, CA
+94042, USA.