issue:10 Improved the compatibility with the Redis API. Added the support for missing commands and multiple-argument commands like ZADD or RPUSH.
Improved the code (aka test) coverage.
Merge branch 'master' of github.com:leporo/tornado-redis into redis_2_4_support
Refactored the command execution sequence.
Merge branch 'redis_2_4_support'
Bumped the version number.