Add vagrant package

Remove unneeded 'cd -' in vagrant script

packages/vagrant.rb

+require 'package'
+
+class Vagrant < Package
+  description 'Vagrant is a tool for building and distributing development environments.'
+  homepage 'https://www.vagrantup.com/'
+  version '2.0.1'
+  source_url 'https://github.com/hashicorp/vagrant/archive/v2.0.1.tar.gz'
+  source_sha256 '212b91c45f60a825fcfc656424021e2550833778a6d4ebe13458676201a04eba'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'ruby'
+
+  def self.install
+    system "gem install bundle" unless File.exists? "#{CREW_PREFIX}/bin/bundle"
+    system "bundle install"
+    system "mkdir -p #{CREW_DEST_PREFIX}/bin"
+    FileUtils.cd("#{CREW_DEST_PREFIX}/bin") do
+      system "echo '#!/bin/bash' > vagrant"
+      system "echo 'cd #{CREW_PREFIX}/share/vagrant' >> vagrant"
+      system "echo 'bundle exec vagrant \"\$@\"' >> vagrant"
+      system "chmod +x vagrant"
+    end
+    system "sed -i '349,354d' templates/locales/en.yml"
+    system "mkdir -p #{CREW_DEST_PREFIX}/share/vagrant"
+    system "cp -r . #{CREW_DEST_PREFIX}/share/vagrant"
+  end
+end