The package golang-github-mreiferson-go-httpclient 0.0~git20160630.0.31f0106-2.1 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-mreiferson-go-httpclient -- More information about golang-github-mreiferson-go-httpclient: http://pkg.kali.org/pkg/golang-github-mreiferson-go-httpclient