Merge pull request #19 from cnnic/dev

Dev
add test 400 404  422 for nameserverSearch
Merge commit '1c8f4ae110d440e155276a124352d51e128427da' into dev
Merge remote-tracking branch 'remoteGit/dev' into dev
Merge pull request #141 from wade1012/dev

Dev Wade
Merge pull request #12 from cnnic/dev

Dev