update ssdb-cli
delete tools/a.php
Merge pull request #319 from ideawu/master

merge master into dev
update README.md
Merge pull request #320 from ideawu/dev

Dev
Delete expireation info when deleting key
Merge pull request #330 from ideawu/dev

Delete expireation info when deleting key
Fix zRangeByScore(redis) bug
Fix zRangeByScore(redis) bug
Merge pull request #332 from ideawu/dev

Fix zRangeByScore(redis) bug
update ssdb-bench
Merge pull request #336 from ideawu/dev

update ssdb-bench
update
Merge pull request #337 from ideawu/dev

update
Fix key expiration/ttl bug
Merge pull request #339 from ideawu/dev

Fix key expiration/ttl bug
Merge pull request #340 from ideawu/master

merge master