Add cask for Battery Time Remaining
user
```ruby
class BatteryTimeRemaining < Cask
  url 'http://yap.nu/battery-time-remaining/download/Battery%20Time%20Remaining%202-2.0.2.zip'
  homepage 'http://yap.nu/battery-time-remaining/'
  version '2.0.2'
  sha1 '351b0dd2c1251681cc5a0fcf8c0af784393e98d3'
  link 'Battery Time Remaining 2.app'
end
```
assistant