Merge branch 'master' of https://github.com/acdlite/redux-actions

Author: acdlite

README.md

@@ -10,9 +10,9 @@ redux-actions
 npm install --save redux-actions
 ```
 
-### `createAction(type, actionCreator = Identity)`
+### `createAction(type, payloadCreator = Identity, ?metaCreator)`
 
-Wraps an action creator so that its return value is the payload of a Flux Standard Action. If no action creator is passed, or if the action creator is not a function, the identity function is used.
+Wraps an action creator so that its return value is the payload of a Flux Standard Action. If no payload creator is passed, or if it's not a function, the identity function is used.
 
 Example:
 
@@ -35,6 +35,8 @@ Use the identity form to create one-off actions:
 createAction('ADD_TODO')('Use Redux');
 ```
 
+`metaCreator` is an optional function that creates metadata for the payload. It receives the same arguments as the payload creator, but its result becomes the meta field of the resulting action. If `metaCreator` is undefined or not a function, the meta field is omitted.
+
 ### `handleAction(type, reducer | reducerMap)`
 
 Wraps a reducer so that only handles Flux Standard Actions of a certain type.