gather Redis's sub connections to one connection
This is a proxy of Redis for SUBSCRIBE.
In typical situation of using Pub/Sub of Redis, you want to subscribe many channels on a single process.
But that makes you to create many clients resulting EMFILE error.
This module proxies many SUBSCRIBE clients to a single Redis connection.
var proxy =connection sub1 sub2;connection = proxy; // extention of redis.RedisClientsub1 = connection;sub1sub1sub2 = connection;sub2sub2