refactor cat api
Merge pull request #89 from ainilife/biz-abtest

ABTest improve
refator metric analyzer
Merge branch 'biz' of github.com:dianping/cat into biz
modify the version
Merge pull request #90 from youyong205/biz

Cat API revised
modify the analyzer
modify the code name
modify the metric analyzer
add metric config
modify the metric config
refator metric config
modify the cat refresh thread
Merge branch 'biz' of github.com:dianping/cat into biz
modify the manager
ignore metric test case
modify the default metric config file
fix the metric test case bug
add the metric problem
modify the cat dependency topology