socket timeout and connection pool support missing.

[wyuenho]

The client constructor doesn't take any extra *_kwargs thus there's no way to forward them to the underlying client. I was wondering if *_kwargs should be added and forwarded to _RedisClient() instead of opening a new ticket for every new param in Redis()'s constructor that's missing in Client().

[ask]

Sounds good! Could you whip up a patch for this?