带 https_proxy 前缀的都是需要翻墙的
https_proxy=127.0.0.1:1080 go get -v github.com/mdempsky/gocode
go get -v github.com/uudashr/gopkgs/cmd/gopkgs
https_proxy=127.0.0.1:1080 go get -v github.com/ramya-rao-a/go-outline
https_proxy=127.0.0.1:1080 go get -v github.com/acroca/go-symbols
https_proxy=127.0.0.1:1080 go get -v golang.org/x/tools/cmd/guru
https_proxy=127.0.0.1:1080 go get -v golang.org/x/tools/cmd/gorename
https_proxy=127.0.0.1:1080 go get -v github.com/derekparker/delve/cmd/dlv
https_proxy=127.0.0.1:1080 go get -v github.com/stamblerre/gocode
https_proxy=127.0.0.1:1080 go get -v github.com/ianthehat/godef
https_proxy=127.0.0.1:1080 go get -v github.com/sqs/goreturns
https_proxy=127.0.0.1:1080 go get -v golang.org/x/lint/golint