adding shiftit

ShiftIt: Managing window size and position in OSX. BOOM!
Add cask for Google Music Manager.

Upload music from your computer to Google Play with the Music Manager desktop
application and listen to the music you love anywhere you have Internet access.
Merge pull request #1293 from bmcustodio/google-music-manager

Add cask for Google Music Manager.
Merge pull request #1289 from capen/shifit

Shiftit 0.16
Update lime-chat v2.3.9 . Now works in OS X 10.9 Mavericks
Merge pull request #1294 from hanxue/limechat

Update lime-chat v2.3.9
Update diffmerge v4.2.0.697
Merge pull request #1295 from hanxue/diffmerge

Update DiffMerge to v4.2.0.697
Updated to BitTorrent Sync to latest version
Merge pull request #1296 from janrito/bit-torrent-sync-latest

Updated to BitTorrent Sync to latest version
Alfred 2.1.0
Fix ShiftIt home URL
Merge pull request #1297 from leoj3n/shiftit-home-url

Fix ShiftIt home URL
Added keycue

KeyCue helps you to use your Mac OS X applications more effectively by displaying a concise table of all currently available menu shortcuts.
fixed filename
Merge pull request #1298 from spdustin/keycue

Added keycue
Update ShiftIt Homepage
Match non-patchlevel releases of Alfred
Add KeePassX 2.

Signed-off-by: Fernando Paredes <nano@fdp.io>

- Class name/file renamed to match the existing stable cask.
- Add Alpha designation

Closes #1282
Remove aurora checksum. Useless for a nightly.