Merge pull request #67 from sunryuan/master

OK
Bug Fix
Merge pull request #68 from sunryuan/master

Done
Merge branch 'develop' of https://github.com/dianping/taurus
Bug Fix
Bug Fix
Bug Fix
Add interval time in alert
Bug Fix
add RuleAlert update
Add AlertRule info into TaskDTO
Merge pull request #69 from sunryuan/master

Done
Fix Merge Conflicts
Improve Regex expression to match depedency expression
Bug Fix
Bug Fix
Merge pull request #70 from sunryuan/master

fix bugs
Merge branch 'develop' of https://github.com/dianping/taurus
Add . into denpendency expression
Bug Fix