Notes on packaging directive in serverless.yml

Author: dschep

README.md

@@ -34,4 +34,6 @@ import requests
 
 ## Limitations
 
-For now this only works with pure Python modules unless running serverless on the same architeture as AWS (x86_64 Linux).
+ * MacOS & Windows: For now this only works with pure Python modules unless running serverless on the same architeture as AWS (x86_64 Linux).
+  * If using the `package` directive in `serverless.yml` ensure that `.requirements` and `requirements.py` are included.
+