Add support for SORT command in redis.
Update Redis notes with info about SORT support.
Merge pull request #263 from areina/add-support-for-sort-command

Add support for SORT command in Redis.
ping & quit supported
Merge pull request #255 from idning/ping_quit

ping & quit supported
update version 0.3.0 => 0.4.1
update ChangeLog
fix redis.md
fix core on invalid mset like "mset a a a"
Merge pull request #268 from ngaut/master

fix redis.md
Adds init script for debian servers
Update description
Merge pull request #274 from rhoml/rhoml/add-debian-init

Adds init script for debian servers
add GCC option -fno-strict-aliasing

see: https://github.com/twitter/twemproxy/issues/276
Merge branch 'master' of github.com:twitter/twemproxy
allow null key(empty key)