Add fasd package

packages/fasd.rb

+require 'package'
+
+class Fasd < Package
+  description 'Command-line productivity booster, offers quick access to files and directories, inspired by autojump, z and v.'
+  homepage 'https://github.com/clvv/fasd'
+  version '1.0.1'
+  source_url 'https://github.com/clvv/fasd/archive/1.0.1.tar.gz'
+  source_sha1 'aeb3f9c6f8f9e4355016e3255429bcad5c7a5689'
+
+  def self.install
+    system "sed -i 's,share/man,man,' Makefile"
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end