```ruby
class LightTable < Cask
  url 'https://d35ac8ww5dfjyg.cloudfront.net/playground/bins/0.5.4/LightTableMac.zip'
  homepage 'http://www.lighttable.com/'
  version '0.5.4'
  sha1 'dd704ed5681f9b6bdfe38f8e31c4a92f84192c12'
  link 'LightTable.app'
end
```

Update to light table 0.5.6
user
```ruby
class LightTable < Cask
  url 'https://d35ac8ww5dfjyg.cloudfront.net/playground/bins/0.5.6/LightTableMac.zip'
  homepage 'http://www.lighttable.com/'
  version '0.5.6'
  sha1 '02bcb3a0794d55635d673712a4eb8c9f5efa34fa'
  link 'LightTable.app'
end
```
assistant