Fix RedisClient.del so that it properly handles multiple keys for multi del.
Add a check in multi.js's _command function to flatten the argument list if it comes as a single element array whose only element is an array. node-redis appears to handle this scenario.
RedisClient.delso that it properly handles multiple keys for multidel.multi.js's_commandfunction to flatten the argument list if it comes as a single element array whose only element is an array.node-redisappears to handle this scenario.