* Add go vet and golint

* Fix all problems found by golint

* Install golint in traivs

* Fix the test fail

* Add test cases for job create

* Add test cases for edit user desc

* Add test cases for user delete

* Add post command hook

* Remove commented codes

* Fix the reduandent codes

* Add support to download Jenkins

* Add test cases for http downloader

* Exclued mock files

* Exclued mock files

* Add test cases for center download

* Remove mock files

* Fix gen-mock

* Add init stage for building

* Add test case for jenkins upgrade cmd

* Add test casee for center watch cmd

* Add test case for center cmd

* Add support to define a suite of plugins

* Add test for findSuiteByName

* Add support to add description for the jcli config item

* fix error

* delete useless information

* fix remove a config

* update remove current Jenkins config

* update error information

* update some information