Add Note for character limit of function path in events

README.md

@@ -236,6 +236,8 @@ Zappa can be used to easily schedule functions to occur on regular intervals. Th
 These functions will be packaged and deployed along with your `app_function` and called from the handler automatically.
 Just list your functions and the expression to schedule them using [cron or rate syntax](http://docs.aws.amazon.com/lambda/latest/dg/tutorial-scheduled-events-schedule-expressions.html) in your *zappa_settings.json* file:
 
+**Note:** `function` path should not exceed 64 characters.
+
 ```javascript
 {
     "production": {