* Add logger for jcli

* Add more test cases for plugin download command

* Remove unused function

* Add test cases for init logger

* Add support to download Jenkins from a mirror site

* Add more test cases

* Add language setting with the api request

* Delete extra files

* became a global flag to the configuration file

* update when default language question

* update some questions

* Use a better way to set language

* update build failed question

* One method instead of content And remove extra template content

* update a question

* Add support to create a job by copy mode

* Add more test cases

* Add args valid method

* Fix the test failed

* Cleanup the unnecessary code lines

* 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