phpredis 2.2.5

This is a minor release with several bug fixes as well as additions to support
new commands that have been introduced to Redis since our last release.

A special thanks to everyone who helps the project by commenting on issues and
submitting pull requests!  :)

[NEW] Support for the BITPOS command
[NEW] Connection timeout option for RedisArray (@MiketoString)
[NEW] A _serialize method, to complement our existing _unserialize method
[NEW] Support for the PUBSUB command
[NEW] Support for SCAN, SSCAN, HSCAN, and ZSCAN
[NEW] Support for the WAIT command

[FIX] Handle the COPY and REPLACE arguments for the MIGRATE command

[DOC] Fix syntax error in documentation for the SET command (@mithunsatheesh)
[DOC] Homebrew documentation instructions (@mathias)

Addresses phpredis#294 and phpredis#442

Bugfix to RedisArray so we don't segfault

Addresses phpredis#435, phpredis#436

Addresses phpredis#437

Pull phpredis#421

Fixes phpredis#408

Addresses phpredis#407

Addresses phpredis#391

Addresses phpredis#394 and phpredis#395