Update tutorial_zh.md

handle accept error, fix CodisLabs#607

Merge pull request CodisLabs#592 from spinlock/dev3.0

Add codis-fe

roll more files to avoid replace old logs, temporarily fix CodisLabs#542

only handle latest action

Merge pull request CodisLabs#498 from wandoulabs/godep

use godep compulsively

update FAQ for session expired

fix bug when proxy reading redis get error

skip pre_migrate if slot is already migrating

remove unused code