Auto-install puppet-mode
Set properly smartparens's default keymap
Add new command prelude-youtube
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Add new command prelude-youtube
  Set properly smartparens's default keymap
  Auto-install puppet-mode
Merge branch 'master' of github.com:WaYdotNET/prelude

* 'master' of github.com:WaYdotNET/prelude: