Spyder 2.2.5

Add a new Cask for the Python IDE Spyder.
Merge pull request #1475 from chriswl/spyder_2_2_5

Spyder 2.2.5
Rename Img2icns.rb to img2icns.rb
Thunderbird 17.0.10esr
Backup Loupe 2.4.2
Merge remote-tracking branch 'phinze/homebrew-cask/master'