Merge pull request #4 from cnnic/dev

Dev
add NameserverSearch.java
Merge pull request #7 from cnnic/dev

Merge pull request #87 from wade1012/dev
Merge remote-tracking branch 'remoteGit/dev' into dev
Merge pull request #88 from wade1012/dev

add NameserverSearch.java
Merge pull request #5 from cnnic/dev

Dev
authorization for search
add license.
Merge pull request #90 from forumbyr/master

authorization for search
Merge pull request #1 from cnnic/dev

Dev