Update shebang for shell compatibility #6

Changed the shebang in the octojoom script. This change improves portability by allowing the script to run in environments where /bin/bash may not be available.

src/octojoom

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # The most recent program version.
 _VERSION="3.6.1"