Add copyright headers

advanced/Scripts/whitelist.sh

@@ -1,4 +1,12 @@
-#!/bin/bash
+#!/usr/bin/env bash
+# (c) 2015 by Jacob Salmela
+# This file is part of Pi-hole.
+#
+# Pi-hole is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+
 whitelist=/etc/pihole/whitelist.txt
 adList=/etc/pihole/gravity.list
 if [[ ! -f $whitelist ]];then