Issue #6.  Adding load from url feature.
Renaming cask_title to requested_cask for clarity.
Merge branch 'master' into cask-strategy

* master: (75 commits)
  Update Shuttle from version 1.1.1 to 1.1.2
  no version but latest
  OSX port of the awesome gqrx SDR software
  SdrDx – OS X and Windows SDR Software
  Updates version for LibreOffice to 4.1
  Adds cask for Simon.app
  DSP Radio - Software Defined Radio for Mac OS X
  CuteSdr, the QT based SDR project from RF-Space.
  Updated to Zotero 4.0.9
  add maratis 3.21
  updated xld to 20130720
  Rename HexFiend.rb to hexfiend.rb
  Add latest Hex Fiend.
  Add AeroFS cask
  Update link option.
  Add cask for MongoHub (https://github.com/fotonauts/MongoHub-Mac)
  Add cask for Robomongo (http://robomongo.org)
  Add cask for MongoHub (https://github.com/fotonauts/MongoHub-Mac)
  Adding 'Google Earth'.
  Add link to OpenOffice
  ...
Fixing test file url
Simplifying uri source validation.
Add Backblaze Downloader Cask
Merge pull request #842 from jgarber623/backblaze-downloader

Add Backblaze Downloader Cask
Update MacUpdate Desktop to 5.2.3
Merge pull request #843 from NanoXD/macupdate

Update MacUpdate Desktop to 5.2.3
Vagrant 1.2.7
Merge pull request #844 from timsutton/vagrant-1.2.7

Vagrant 1.2.7
New cask: omni-graffle-standard

New cask: omni-graffle-standard
As omni-graffle is the pro version, requiring a different
license, omni-graffle-standard installs the standard
version of the omni-graffle software.
Fixed uri in test case
New cask: iDeskCal

New cask: iDeskCal; Software to display calendar events
on the desktop
Added extention to omni-graffle-standard link

Added extention to omni-graffle-standard link
Merge pull request #847 from derphilipp/ideskcal

New cask: iDeskCal
New cask: Audio Hijack Pro

New cask: Audio Hijack Pro, an audio software for recording
applications.
Fixed url for audio-hijack-pro

Fixed url for audio-hijack-pro, thanks to Fernando Paredes
Merge pull request #848 from derphilipp/audio-hijack-pro

New cask: Audio Hijack Pro
MacVim 7.4b (snapshot 69)