Change $GOROOT to $GOPATH in readme
Change $GOROOT to $GOPATH in readme

go get downloads to $GOPATH

Signed-off-by: Alexander Morozov <4efb7da3e38416208b41d8021a942884d8a9435c@docker.com>

ckeyer/go-log,shell909090/go-logging,op/go-logging