modify the router
Merge branch 'master' of github.com:dianping/cat
add HeartbeatAlert module
Merge branch 'master' of github.com:dianping/cat
refactor code
Merge pull request #524 from youyong205/master

refactor
Merge pull request #523 from jialinsun/master

add alert name define
Merge pull request #522 from leonindy/master

add HeartbeatAlert module
scheduled report modify