Address GitLab issue #11: trivial patch for macports/osx requirements

diff --git a/Makefile b/Makefile
index 218a173d0f8ca71922c2b577de0545cc0b61e54d..061087a8a40b8ac36c0d2644f1ad8ddcfa1b0c6d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,9 @@
 # If you have pip installed,
 #
 # pip3 install PyYAML
+#
+# If you are using MacPorts on OS X:
+# port install py3{5,6}-yaml as appropriate for your Python 3 version.
 
 VERS=1.0