Add help2info package

packages/help2info.rb

+require 'package'
+
+class Help2info < Package
+  description 'help2info is a bash script that generates a simple info page from the output of the --help argument of the specified program.'
+  homepage 'http://savannah.nongnu.org/projects/help2info'
+  version '0.1.1'
+  source_url 'http://download.savannah.nongnu.org/releases/help2info/help2info-0.1.1.tar.bz2'
+  source_sha256 '9964fa462fb3e0f0646c97d986b69b3365461e94365cd80c5ec57f03ca08a839'
+
+  def self.build
+    system './configure'
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end