Add support for IORedis.Cluster type in ConnectionOptions for TypeScr…

…ipt (#438)

* Add support for IORedis.Cluster type in ConnectionOptions for TypeScript

* Add brief documentation that redisCluster is also supported

README.md

@@ -261,10 +261,14 @@ You can also pass redis client directly.
 
 ```javascript
 // assume you already initialized redis client before
+// the "redis" key can be IORedis.Redis or IORedis.Cluster instance
 
 var redisClient = new Redis();
 var connectionDetails = { redis: redisClient };
 
+var redisCluster = new Cluster();
+var connectionDetails = { redis: redisCluster };
+
 var worker = new NodeResque.Worker(
   { connection: connectionDetails, queues: "math" },
   jobs

src/core/connection.ts

@@ -12,7 +12,7 @@ export class Connection extends EventEmitter {
   options: ConnectionOptions | null;
   private eventListeners: EventListeners;
   connected: boolean;
-  redis: IORedis.Redis;
+  redis: IORedis.Redis | IORedis.Cluster;
 
   constructor(options: ConnectionOptions = {}) {
     super();

src/types/options.ts

@@ -10,7 +10,7 @@ export interface ConnectionOptions {
   namespace?: string;
   looping?: boolean;
   options?: any;
-  redis?: IORedis.Redis;
+  redis?: IORedis.Redis | IORedis.Cluster;
   scanCount?: number;
 }