Add Redis::DistRedis as a valid Redis client

Author: Ben Marini

lib/resque.rb

@@ -26,15 +26,16 @@ module Resque
   # Accepts:
   #   1. A 'hostname:port' string
   #   2. A 'hostname:port:db' string (to select the Redis db)
-  #   3. An instance of `Redis`, `Redis::Client`, or `Redis::Namespace`.
+  #   3. An instance of `Redis`, `Redis::Client`, `Redis::DistRedis`,
+  #      or `Redis::Namespace`.
   def redis=(server)
     case server
     when String
       host, port, db = server.split(':')
       redis = Redis.new(:host => host, :port => port,
         :thread_safe => true, :db => db)
       @redis = Redis::Namespace.new(:resque, :redis => redis)
-    when Redis, Redis::Client
+    when Redis, Redis::Client, Redis::DistRedis
       @redis = Redis::Namespace.new(:resque, :redis => server)
     when Redis::Namespace
       @redis = server