add ttl test for set and bitmap
can run build_leveldb.sh more than once
update read me
refactor
tx commit bugfix
add tx support for lua(openresty)
scan add match support

match uses regexp
add  tx support for ledis-py
Merge branch 'client-feature' into develop
delete deprecated code
server add scan support
update scan support
add flush command

complete client command and document
add cli auco-completion for new commands
Merge pull request #58 from holys/develop

add cli auco-completion for new commands
move build_tool to tools
update read me
remove json configuration support
bugfix benchmark
bugfix benchmark