Add bash headers.

setup/sublime-packages.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 # Installs/updates Sublime packages
 #
 # 1. Installs Package Control (all plugins listed in `Package Control.sublime-settings` will be installed after Sublime restarts).

setup/sublime-settings.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 # Enables Sublime settings syncronization
 
 if [ `uname` == 'Darwin' ]; then