Send also the liftedState for connected devtools

Related to #77.

docs/API/Methods.md

@@ -48,14 +48,14 @@ Send a new action and state manually to be shown on the monitor.
 
 ##### Arguments
 
-- [`config`] *Object* intended to be the same as for [Redux store enhancer](Arguments.md#windowdevtoolsextensionconfig). For now only `instanceId` should be specified.
+- [`config`] *Object* intended to be the same as for [Redux store enhancer](Arguments.md#windowdevtoolsextensionconfig). For now only `instanceId` and `shouldStringify` should be specified.
 
 ##### Returns
 *Object* containing the following methods:
 
 - `subscribe(listener)` - adds a change listener. It will be called any time an action is dispatched form the monitor.
 - `unsubscribe()` - unsubscribes the change listener. You can use [window.devToolsExtension.disconnect](#windowdevtoolsextensiondisconnect) to remove all listeners.
-- `send(action, state)` - sends a new action and state manually to be shown on the monitor.
+- `send(action, state)` - sends a new action and state manually to be shown on the monitor. If action is `null` then we suppose we send `liftedState`. 
 
 [See the example for an example on usage](https://github.com/zalmoxisus/redux-devtools-extension/blob/master/examples/react-counter-messaging/components/Counter.js).
 

src/browser/extension/utils/contentScriptMsg.js

@@ -24,14 +24,20 @@ export function toContentScript(message, shouldStringify) {
 }
 
 export function sendMessage(action, state, shouldStringify, id) {
-  toContentScript({
-    type: 'ACTION',
-    action: typeof action === 'object' ? action : { type: action },
+  const message = {
     payload: state,
     source: '@devtools-page',
     name: document.title,
     id
-  }, shouldStringify);
+  };
+  if (action) {
+    message.type = 'ACTION';
+    message.action = typeof action === 'object' ? action : { type: action };
+  } else {
+    message.type = 'STATE';
+  }
+
+  toContentScript(message, shouldStringify);
 }
 
 function handleMessages(event) {