Add KeyStore Explorer 5.0.1 cask
user
```ruby
class KeystoreExplorer < Cask
  url 'http://downloads.sourceforge.net/project/keystore-explorer/KSE%205.0.1/kse-501.dmg?r=&ts=1393234297&use_mirror=heanet'
  homepage 'http://keystore-explorer.sourceforge.net/index.php'
  version '5.0.1'
  sha256 '64932fc5a26bd4de32d952b73431307c9a7c3100c1b11e76ab9f55e2a2cf7d49'
  link 'KeyStore Explorer 5.0.1.app'
end
```
assistant