diff --git a/.rubocop.yml b/.rubocop.yml
index d9eac99..87f73fc 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -14,3 +14,7 @@ Metrics/ClassLength:
 # Configuration parameters: CountComments.
 Metrics/MethodLength:
     Enabled: false
+
+Style/FileName:
+    Exclude:
+      - 'bin/git-generate-changelog'
diff --git a/bin/git-generate-changelog b/bin/git-generate-changelog
new file mode 100755
index 0000000..5d0d48a
--- /dev/null
+++ b/bin/git-generate-changelog
@@ -0,0 +1,4 @@
+#! /usr/bin/env ruby
+
+require_relative "../lib/github_changelog_generator"
+GitHubChangelogGenerator::ChangelogGenerator.new.run
diff --git a/ext/mkrf_conf.rb b/ext/mkrf_conf.rb
new file mode 100644
index 0000000..60e36a3
--- /dev/null
+++ b/ext/mkrf_conf.rb
@@ -0,0 +1,10 @@
+PREFIX = "/usr/local"
+MANPREFIX = "#{PREFIX}/share/man/man1"
+MAN_PAGES = "man/git-*"
+
+require "fileutils"
+
+Dir.glob(MAN_PAGES).each do |f|
+  filename = File.basename(f)
+  FileUtils.cp(f, "#{MANPREFIX}/#{filename}")
+end
diff --git a/github_changelog_generator.gemspec b/github_changelog_generator.gemspec
index fd6249d..f4b44cf 100644
--- a/github_changelog_generator.gemspec
+++ b/github_changelog_generator.gemspec
@@ -16,7 +16,8 @@ Gem::Specification.new do |spec|
   spec.summary = "Script, that automatically generate changelog from your tags, issues, labels and pull requests."
   spec.description = "Changelog generation has never been so easy. Fully automate changelog generation - this gem generate change log file based on tags, issues and merged pull requests from Github issue tracker."
   spec.homepage = "https://github.com/skywinder/Github-Changelog-Generator"
-  spec.license = "MIT"
+  spec.license       = "MIT"
+  spec.extensions  = "ext/mkrf_conf.rb"
 
   spec.files = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
diff --git a/man/git-generate-changelog.1 b/man/git-generate-changelog.1
new file mode 100644
index 0000000..bdf7897
--- /dev/null
+++ b/man/git-generate-changelog.1
@@ -0,0 +1,27 @@
+.\" Manpage for git-activity
+.TH man 1 "Sep 2015" "1.0" "git genrate-changelog man page"
+.SH NAME
+git activity \- Generate changelog from github
+.SH SYNOPSIS
+git generate-changelog [-h|--help] [-u|--user] [-p|--project]
+.SH DESCRIPTION
+Automatically generate change log from your tags, issues, labels and pull requests on GitHub.
+.SH OPTIONS
+.TP
+.I --h
+Show helper provide from gem.
+.TP
+.I --help
+Thos this man page.
+.TP
+.I -u | --user github_username
+Username of the owner of target GitHub repo
+.TP
+.I -p | --project github_project
+Name of project on GitHub Just convenience options to specify user/project:
+.SH SEE ALSO
+git-for-each-ref(1)
+.SH BUGS
+No known bugs.
+.SH AUTHOR
+Petr Korolev <sky4winder+github@gmail.com>