Merge pull request #8606 from zhu1230/master

add rails/actioncable definition files.

rails-actioncable/rails-actioncable-tests.ts

@@ -0,0 +1,4 @@
+/// <reference path="./rails-actioncable.d.ts" />
+App = {};
+App.cable = ActionCable.createConsumer();
+App.cable.subscriptions.create("NetworkChannel", {});

rails-actioncable/rails-actioncable.d.ts

@@ -0,0 +1,31 @@
+// Type definitions for ActionCable
+// Project: https://github.com/rails/rails/tree/master/actioncable
+// Definitions by: Vincent Zhu <https://github.com/zhu1230>
+// Definitions: https://github.com/zhu1230/DefinitelyTyped
+
+declare module ActionCable {
+  interface Channel {
+    unsubscribe(): void;
+    perform(action: string, data: {}): void;
+  }
+  interface Subscriptions {
+    create(chan_name: string, obj: {}): Channel;
+  }
+  interface Cable {
+    subscriptions: Subscriptions;
+  }
+  function createConsumer(): Cable;
+  function createConsumer(url: string): Cable;
+}
+
+declare interface AppInterface {
+  cable?: ActionCable.Cable;
+  network?: ActionCable.Channel; 
+}
+
+declare var App: AppInterface;
+
+
+
+
+