Vagrant163: Fix license, add name

Casks/vagrant163.rb

@@ -3,8 +3,9 @@ cask :v1 => 'vagrant163' do
   sha256 'ed1de41ca11a2251e4748a7a88fb46c3312780b7952f2248683f8ed2a007bc72'
 
   url "https://dl.bintray.com/mitchellh/vagrant/vagrant_#{version}.dmg"
+  name 'Vagrant'
   homepage 'http://www.vagrantup.com'
-  license :unknown
+  license :mit
 
   pkg 'Vagrant.pkg'
   uninstall :script => { :executable => 'uninstall.tool', :input => %w[Yes] }