Caskfile: Move `phinze/cask` to `caskroom/cask`

Homebrew Cask has been moved to https://github.com/caskroom/homebrew-cask.

Closes #375.
Merge branch 'master' of https://github.com/mathiasbynens/dotfiles

# By Mathias Bynens (5) and others
# Via Mathias Bynens
* 'master' of https://github.com/mathiasbynens/dotfiles:
  Caskfile: Move `phinze/cask` to `caskroom/cask`
  Brewfile: Fix PHP 5.5 installation
  .osx: Don’t show hidden files by default
  Brewfile: Install PHP 5.5 with GMP support
  Brewfile: Install `ucspi-tcp`, if only for `tcpserver`
  .osx: Don’t reset the desktop wallpaper when resetting Launchpad
  Brewfile: Install `xpdf`, if only for `pdfinfo`
Merge branch 'master' of github.com:lexrus/.files

* 'master' of github.com:lexrus/.files: