Fix daisy-disk cask.

Now that DaisyDisk has gone 3.0, this cask is broken. I made the following changes:

- Updated the download URL (now a zip archive instead of a disk image)
- Changed the cask version to 'latest'
- Removed the checksum requirement
Merge pull request #990 from codykrieger/patch-1

Fix daisy-disk cask.
CodeKit 1.8 (8322)
LightTable 0.5.3
Opera 16.0.1196.73
adds zephyros cask

"The OS X window manager for hackers"
use latest version with no checksum
Merge pull request #991 from cburmeister/zephyros

adds zephyros cask