Update README.md

REAS · web-flow · commit c2e1a1155821 · 2021-08-08T20:09:35.000-07:00
diff --git a/README.md b/README.md
@@ -1,2 +1,4 @@
 # processing-examples
 Example files for "processing4" and "processing-website"
+
+The examples without a credit line were written by Casey Reas or Ben Fry and they are in the public domain. Daniel Shiffman's examples are in the public domain. We appreciate a link back to the original and/or an acknowledgement when they are used. The copyrights for other credited files remains with the original authors.
