changed readme

Author: mariocoski

README.md

@@ -15,6 +15,7 @@ The main differences to the @js-entity-repos/express:
 
 - different naming convention: using `item` instead of `entity`
 - cursor based pagination operates using `before` and `after` instead of `cursor` and `direction`
+- optional `enveloping` response (`GET /endpoint?envelope=true`) for clients not capable of working with headers and JSONP
 - `granular transactions handlers` for each `request handler` - this could be used for i.e. `authentication` or `permissions` checks
 - possibility to `override` each `request handler`
 - ability to disable json body parser middleware if already present in the stack (`enableJsonBodyParser: false`)