Add Microsoft Remote Desktop Connection Client
user
```ruby
class RemoteDesktopConnection < Cask
  url 'http://download.microsoft.com/download/C/F/0/CF0AE39A-3307-4D39-9D50-58E699C91B2F/RDC_2.1.1_ALL.dmg'
  homepage 'http://www.microsoft.com/en-us/download/details.aspx?id=18140'
  version '2.1.1'
  sha256 '4ebe551c9ee0e2da6b8f746be13c2df342c6f14cd3fbedbf2ab490f09b44616f'
  install 'RDC Installer.mpkg'
  uninstall :pkgutil => 'com.microsoft.rdc.all.*'
end
```
assistant