```ruby
class Chromium < Cask
  url 'http://downloads.sourceforge.net/project/osxportableapps/Chromium/ChromiumOSX_30.0.1599.101.dmg'
  homepage 'http://www.freesmug.org/chromium'
  version '30.0.1599.101'
  sha1 '329b75b7a616ad55ac4cc84cd4206a0b33ac097c'
  link 'Chromium.app'
end
```

Switch repository for Chromium to have the latest version
user
```ruby
class Chromium < Cask
  url 'https://download-chromium.appspot.com/dl/Mac'
  homepage 'https://download-chromium.appspot.com/'
  version 'latest'
  no_checksum
  link 'chrome-mac/Chromium.app'
end
```
assistant