refactor
Merge pull request #6 from atellwu/develop

完善puma-admin; 重构puma-core的dao。
Merge branch 'develop_branch2' of https://github.com/dianping/puma into develop_branch2
Merge pull request #7 from atellwu/develop

修改MongoClient的puma-admin名字为‘puma’
Merge branch 'develop_branch2' of https://github.com/dianping/puma into develop_branch2
Merge pull request #8 from atellwu/develop

重构：Action改为Task， State并入Task对象
Merge branch 'develop_branch2' of https://github.com/dianping/puma into develop_branch2
add task framework
Merge pull request #9 from atellwu/develop

基本完成“修改同步”
Merge branch 'develop_branch2' of https://github.com/dianping/puma into develop_branch2
Merge pull request #10 from leoliang/develop_branch2

增加task framework，但是还没有完善
Merge branch 'develop_branch2' of https://github.com/dianping/puma into develop