Merge branch 'zset_score'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
add server commands of expire/ttl
add client for python
fix bug - expire bk routine keep running after ledis close
use our own leveldb
iterator find optimize
copy garyburd redid lib to client
use my own log
heel use iterator to multi find and delete
Merge branch 'develop'
add client ledis lib and ledis-cli
update ledis-cli output
use ledis client
ledis use proper return values not []interface{}

This is a very big change and not backward compatible
Merge branch 'develop'
update document
update document