bug fix
Merge pull request #204 from ideawu/dev

merge dev
Merge pull request #210 from ideawu/dev

merge dev
Merge pull request #211 from ideawu/dev

update redis-import to support redis LIST
Merge pull request #214 from ideawu/dev

update tools/ssdb.sh
HashMap-->LinkedHashMap

To keep the sorted elements in Map, modify HashMap to LinkedHashMap.
Merge pull request #218 from AlbertYou/master

HashMap-->LinkedHashMap
Merge pull request #219 from ideawu/master

Master