Add Vagrant 1.7.2 and Virtualbox 4.3.30-101610

Casks/vagrant172.rb

@@ -0,0 +1,15 @@
+cask :v1 => 'vagrant172' do
+  version '1.7.2'
+  sha256 '78d02afada2f066368bd0ce1883f900f89b6dc20f860463ce125e7cb295e347c'
+
+  # bintray.com is the official download host per the vendor homepage
+  url "https://dl.bintray.com/mitchellh/vagrant/vagrant_#{version}.dmg"
+  homepage 'http://www.vagrantup.com'
+  license :mit
+
+  pkg 'Vagrant.pkg'
+
+  uninstall :script => { :executable => 'uninstall.tool', :input => %w[Yes] },
+            :pkgutil => 'com.vagrant.vagrant'
+end
+

Casks/virtualbox4330101610.rb

@@ -0,0 +1,11 @@
+cask :v1 => 'virtualbox4330101610' do
+  version '4.3.30-101610'
+  sha256 '1616b058f232683e74ecd85ed60aebf3c27901893b371596e66e9080a1493ccb'
+
+  url "http://download.virtualbox.org/virtualbox/#{version.split('-')[0]}/VirtualBox-#{version}-OSX.dmg"
+  homepage 'http://www.virtualbox.org'
+  license :unknown
+
+  pkg 'VirtualBox.pkg'
+  uninstall :script => { :executable => 'VirtualBox_Uninstall.tool', :args => %w[--unattended] }
+end