```ruby
class Lighttable < Cask
  url 'http://d35ac8ww5dfjyg.cloudfront.net/playground/bins/0.6.4/LightTableMac.zip'
  homepage 'http://www.lighttable.com/'
  version '0.6.4'
  sha256 'b6a925c50cb2dfe8de9b215456763145d8d7c6432cb013e39e0fb6432fb8dda7'
  link 'LightTable/LightTable.app'
end
```

Update Light Table to 0.6.5
user
```ruby
class Lighttable < Cask
  url 'http://d35ac8ww5dfjyg.cloudfront.net/playground/bins/0.6.5/LightTableMac.zip'
  homepage 'http://www.lighttable.com/'
  version '0.6.5'
  sha256 '05b816605b901e63c47e5add543a21b59c811ac424b00fc3f3bcc3145180be77'
  link 'LightTable/LightTable.app'
end
```
assistant