added new wallpaper
Merge branch 'master' of https://github.com/singuerinc/dotfiles

# By Mathias Bynens (14) and others
# Via nahuel (2) and Nahuel Scotti (1)
* 'master' of https://github.com/singuerinc/dotfiles: (24 commits)
  zsh theme sublime theme
  slate no-full
  wallpaper
  .osx: Disable the sound effects on boot
  .osx: Add GPGMail 2 settings
  .gitconfig: Improve display of astral Unicode symbols in diffs
  .aliases: Add `timer`
  .curlrc: Disguise as IE 9 on Windows 7
  .gitattributes: Disable normalizing line endings globally
  .brew: Install PHP 5.5
  .bash_profile: Remove ‘autocomplete Grunt commands’
  .osx: Add Spotlight settings
  bin: Update `subl` symlink to `Sublime Text 3.app`
  README: Tweak Git-free install command
  .aliases: Make Grunt print stack traces by default
  bootstrap.sh: Avoid `source` if there are no changes
  Remove GPL license
  .osx: Update the GitHub fork link
  Update to Bash v4.2.45
  .gitconfig: Tweak `l` alias
  ...