cask :v1 => 'rstudio-preview' do version '0.98.1079' sha256 'f504400b9cb6d01f7504beedc6ad41b1b10ca8bab8a238eacfe3989cce0b0c9e' url "https://s3.amazonaws.com/rstudio-dailybuilds/RStudio-#{version}.dmg" homepage 'http://www.rstudio.com/ide/download/preview' license :unknown app 'RStudio.app' end