bash may be installed elewhere than /usr/bin/bash and we also may want

pgrange · pgrange · commit d38b110fc4e5 · 2017-01-27T08:53:10.000+01:00
to use another bash command than this one. For instance when testing bash_unit against bash 3 for issue #34.
diff --git a/bash_unit b/bash_unit
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 #   bash unit testing enterprise edition framework for professionals
 #   Copyright (C) 2011-2016 Pascal Grange

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-#!/bin/bash`
	`1`	`+#!/usr/bin/env bash`
`2`	`2`	`#`
`3`	`3`	`# bash unit testing enterprise edition framework for professionals`
`4`	`4`	`# Copyright (C) 2011-2016 Pascal Grange`