Change recipes to follow homebrew-cask

Changed to follow brew-cask:
* Chicken
* Crashplan
* Cyberduck
* DiffMerge
* Flash
* Flux
* Handbrake
* Hostbuddy
* ImageAlpha
* ImageOptim
* KeyboardCleanTool
* LastPass
* Mou
* RubyMine
* Skype
* Synergy
* Things
* Tower
* Tunnelblick
* Viscosity
* Wireshark
* Xquartz

Updated:
* Crashplan 3.5.3
* Cyberduck 4.3.1
* DiffMerge 4.1.0
* ImageAlpha 1.3.5
* OmniGraffle Pro (We had a change in tracking OmniGraffle by version)
* Wireshark 1.10.2
Merge pull request #79 from NanoXD/change-to-cask

Change recipes to follow homebrew-cask