.osx: Display Bluetooth icon in menu bar
README: Credit @kevinSuttle
.osx: Set Desktop as the default location for new Finder windows

Closes #285.
Merge branch 'master' of https://github.com/mathiasbynens/dotfiles

# By Mathias Bynens (2) and Christopher Pelloux (1)
# Via Mathias Bynens
* 'master' of https://github.com/mathiasbynens/dotfiles:
  .osx: Set Desktop as the default location for new Finder windows
  README: Credit @kevinSuttle
  .osx: Display Bluetooth icon in menu bar
create passwd function