Alias the disconnect method as close

[mperham]

The connection_pool gem is implementing automatic reaping of idle connections. In order to do this generically, clients need to provide a close method that the pool can call on reaped connections in order to close the network connection cleanly.

mysql2 and dalli already provide close. This PR adds this convention to redis-rb.

[byroot]

Ref: mperham/connection_pool#125

In order to do this generically, clients need to provide a close method that the pool can call on reaped connections in order to close the network connection cleanly.

That alias make sense, and I highly doubt it will ever conflict with a Redis command, so I'll merge.

But I wonder why connection_pool couldn't check for a few common names such as disconnect.

[mperham]

Convention over configuration. close seems to be a widely accepted convention for the method we need to call. I don't want to maintain a mapping of clients to method names.

Redis already provides the QUIT command which does what you say; I don't see why they would add CLOSE.