Altered the /bin/bash line to use the /usr/bin/env command to

acquire the location of bash from the environment.  This should
work on Linux/OS X/FreeBSD.  FreeBSD puts bash in /usr/local/bin
instead of /bin/ so builds don't work without modification there.

scripts/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This script builds the application from source.
 set -e