Update docs

docs/advanced/thunks.md

@@ -28,4 +28,29 @@ store:dispatch(function(store)
 end)
 ```
 
-Thunks are a simple way to introduce more complex processing of `action` objects, but you may want to consider creating custom [`middleware`](middleware.md) for complex features instead of relying on thunks alone.
+Thunks are a simple way to introduce more complex processing of `action` objects, but you may want to consider creating custom [`middleware`](middleware.md) for complex features instead of relying on thunks alone.
+
+It is also possible to inject a custom argument into the thunk middleware. This is useful for cases like using an API service layer that could be swapped out for a mock service in tests. This is accomplished by using the `Rodux.makeThunkMiddleware` API instead:
+
+```lua
+local myThunkMiddleware = Rodux.makeThunkMiddleware(myCustomArg)
+local store = Rodux.Store.new(reducer, initialState, {
+	myThunkMiddleware,
+})
+
+store:dispatch(function(store, myCustomArg)
+	print("Hello from a thunk with extra argument:", myCustomArg)
+	store:dispatch({
+		type = "thunkAction"
+	})
+end)
+```
+
+If multiple values need to be passed in, they can be combined into a single table:
+
+```lua
+local myThunkMiddleware = Rodux.makeThunkMiddleware({
+    [RoactNetworking] = networking,
+    AvatarEditorService = AvatarEditorService,
+})
+```

docs/api-reference.md

@@ -264,7 +264,12 @@ store:dispatch(function(store)
 end)
 ```
 
-It is also possible to inject a custom argument into the thunk middleware. This is useful for cases like using an API service layer that could be swapped out for a mock service in tests. This is accomplished by using the `Rodux.makeThunkMiddleware` API instead:
+### Rodux.makeThunkMiddleware (unreleased)
+```
+Rodux.makeThunkMiddleware(extraArgument) -> thunkMiddleware
+```
+
+A function that creates a thunk middleware that injects a custom argument when invoking thunks (in addition to the store itself). This is useful for cases like using an API service layer that could be swapped out for a mock service in tests.
 
 ```lua
 local myThunkMiddleware = Rodux.makeThunkMiddleware(myCustomArg)
@@ -278,12 +283,3 @@ store:dispatch(function(store, myCustomArg)
 	})
 end)
 ```
-
-If multiple values need to be passed in, they can be combined into a single table:
-
-```lua
-local myThunkMiddleware = Rodux.makeThunkMiddleware({
-    [RoactNetworking] = networking,
-    AvatarEditorService = AvatarEditorService,
-})
-```