Move debian/man/dh-make-golang.md from Debian packaging

to this upstream repository.

Fixes #129

dh-make-golang.md

@@ -0,0 +1,47 @@
+% DH-MAKE-GOLANG(1) 2018-09-15
+
+# NAME
+
+dh-make-golang - automatically creates Debian packaging for Go packages
+
+# SYNOPSIS
+
+**dh-make-golang** [*globalflags*] <*command*> [*flags*] <*args*>
+
+# DESCRIPTION
+
+**dh-make-golang** is a tool to automatically create Debian packaging for Go
+packages. Its goal is to automate away as much of the work as possible when
+creating a Debian package for a Go library package.
+
+For backwards compatibility, when no command is specified, the **make**
+command is executed. To learn more about a command, run
+"dh-make-golang <*command*> -help", for example "dh-make-golang make -help".
+
+# COMMANDS
+
+**make** *go-package-importpath*
+:   Create a Debian package. **dh-make-golang** will create new files and
+    directories in the current working directory. It will connect to
+    the internet to download the specified Go package.
+
+**search** *pattern*
+:   Search Debian for already-existing packages. Uses Go's default
+    regexp syntax (https://golang.org/pkg/regexp/syntax/).
+
+**estimate** *go-package-importpath*
+:   Estimates the work necessary to bring *go-package-importpath*
+    into Debian by printing all currently unpacked repositories.
+
+**create-salsa-project** *project-name*
+:   Create a project for hosting Debian packaging.
+
+# OPTIONS
+
+Run **dh-make-golang** -help for more details.
+
+# AUTHOR
+
+This manual page was written by Michael Stapelberg <stapelberg@debian.org>
+and Dr.\ Tobias Quathamer <toddy@debian.org>,
+for the Debian project (and may be used by others).