Add golang-doc package
Add golang-doc package

bdwalton/debian-golang,tianon/debian-golang,bdwalton/debian-golang,tianon/debian-golang,nightlyone/golang,bdwalton/debian-golang,nightlyone/golang,tianon/debian-golang,bdwalton/debian-golang,bdwalton/debian-golang,nightlyone/golang,bdwalton/debian-golang,nightlyone/golang,tianon/debian-golang,tianon/debian-golang,nightlyone/golang,tianon/debian-golang,bdwalton/debian-golang,nightlyone/golang,bdwalton/debian-golang,nightlyone/golang,tianon/debian-golang,tianon/debian-golang